# 6.4 Solve simple interest applications  (Page 2/8)

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Find the principal invested if $\text{15,222.57}$ interest was earned in $6$ years at an interest rate of $\text{10.28%}.$

$24,679.91 Find the principal invested if $\text{10,953.70}$ interest was earned in $5$ years at an interest rate of $\text{11.04%.}$ Find the rate if a principal of $\text{5,400}$ earned $\text{432}$ interest in $2$ years. 4% Find the rate if a principal of $\text{2,600}$ earned $\text{468}$ interest in $6$ years. Find the rate if a principal of $\text{11,000}$ earned $\text{1,815}$ interest in $3$ years. 5.5% Find the rate if a principal of $\text{8,500}$ earned $\text{3,230}$ interest in $4$ years. Solve Simple Interest Applications In the following exercises, solve the problem using the simple interest formula. Casey deposited $\text{1,450}$ in a bank account with interest rate $\text{4%.}$ How much interest was earned in $2$ years?$116

Terrence deposited $\text{5,720}$ in a bank account with interest rate $\text{6%.}$ How much interest was earned in $4$ years?

Robin deposited $\text{31,000}$ in a bank account with interest rate $\text{5.2%}.$ How much interest was earned in $3$ years?

$4,836 Carleen deposited $\text{16,400}$ in a bank account with interest rate $\text{3.9%}.$ How much interest was earned in $8$ years? Hilaria borrowed $\text{8,000}$ from her grandfather to pay for college. Five years later, she paid him back the $\text{8,000},$ plus $\text{1,200}$ interest. What was the rate of interest? 3% Kenneth lent his niece $\text{1,200}$ to buy a computer. Two years later, she paid him back the $\text{1,200},$ plus $\text{96}$ interest. What was the rate of interest? Lebron lent his daughter $\text{20,000}$ to help her buy a condominium. When she sold the condominium four years later, she paid him the $\text{20,000},$ plus $\text{3,000}$ interest. What was the rate of interest? 3.75% Pablo borrowed $\text{50,000}$ to start a business. Three years later, he repaid the $\text{50,000},$ plus $\text{9,375}$ interest. What was the rate of interest? In $10$ years, a bank account that paid $\text{5.25%}$ earned $\text{18,375}$ interest. What was the principal of the account?$35,000

In $25$ years, a bond that paid $\text{4.75%}$ earned $\text{2,375}$ interest. What was the principal of the bond?

Joshua's computer loan statement said he would pay $\text{1,244.34}$ in interest for a $3$ year loan at $\text{12.4%}.$ How much did Joshua borrow to buy the computer?

$3,345 Margaret's car loan statement said she would pay $\text{7,683.20}$ in interest for a $5$ year loan at $\text{9.8%.}$ How much did Margaret borrow to buy the car? Caitlin invested $\text{8,200}$ in an $\text{18-month}$ certificate of deposit paying $\text{2.7%}$ interest. How much interest did she earn form this investment?$332.10

Diego invested $\text{6,100}$ in a $\text{9-month}$ certificate of deposit paying $\text{1.8%}$ interest. How much interest did he earn form this investment?

Airin borrowed $\text{3,900}$ from her parents for the down payment on a car and promised to pay them back in $15$ months at a $\text{4%}$ rate of interest. How much interest did she owe her parents?

$195.00 Yuta borrowed $\text{840}$ from his brother to pay for his textbooks and promised to pay him back in $5$ months at a $\text{6%}$ rate of interest. How much interest did Yuta owe his brother? ## Everyday math Interest on savings Find the interest rate your local bank pays on savings accounts. 1. What is the interest rate? 2. Calculate the amount of interest you would earn on a principal of $\text{8,000}$ for $5$ years. Answers will vary. Interest on a loan Find the interest rate your local bank charges for a car loan. 1. What is the interest rate? 2. Calculate the amount of interest you would pay on a loan of $\text{8,000}$ for $5$ years. ## Writing exercises Why do banks pay interest on money deposited in savings accounts? Answers will vary. Why do banks charge interest for lending money? ## Self check After completing the exercises, use this checklist to evaluate your mastery of the objectives of this section. On a scale of 1–10, how would you rate your mastery of this section in light of your responses on the checklist? How can you improve this? #### Questions & Answers where we get a research paper on Nano chemistry....? Maira Reply nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review Ali what are the products of Nano chemistry? Maira Reply There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others.. learn Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level learn Google da no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts Bhagvanji hey Giriraj Preparation and Applications of Nanomaterial for Drug Delivery Hafiz Reply revolt da Application of nanotechnology in medicine what is variations in raman spectra for nanomaterials Jyoti Reply ya I also want to know the raman spectra Bhagvanji I only see partial conversation and what's the question here! Crow Reply what about nanotechnology for water purification RAW Reply please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment. Damian yes that's correct Professor I think Professor Nasa has use it in the 60's, copper as water purification in the moon travel. Alexandre nanocopper obvius Alexandre what is the stm Brian Reply is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.? Rafiq industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong Damian How we are making nano material? LITNING Reply what is a peer LITNING Reply What is meant by 'nano scale'? LITNING Reply What is STMs full form? LITNING scanning tunneling microscope Sahil how nano science is used for hydrophobicity Santosh Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq Rafiq what is differents between GO and RGO? Mahi what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq Rafiq if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION Anam analytical skills graphene is prepared to kill any type viruses . Anam Any one who tell me about Preparation and application of Nanomaterial for drug Delivery Hafiz what is Nano technology ? Bob Reply write examples of Nano molecule? Bob The nanotechnology is as new science, to scale nanometric brayan nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale Damian Is there any normative that regulates the use of silver nanoparticles? Damian Reply what king of growth are you checking .? Renato What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ? Stoney Reply why we need to study biomolecules, molecular biology in nanotechnology? Adin Reply ? Kyle yes I'm doing my masters in nanotechnology, we are being studying all these domains as well.. Adin why? Adin what school? Kyle biomolecules are e building blocks of every organics and inorganic materials. Joe A soccer field is a rectangle 130 meters wide and 110 meters long. The coach asks players to run from one corner to the other corner diagonally across. What is that distance, to the nearest tenths place. Kimberly Reply Jeannette has$5 and \$10 bills in her wallet. The number of fives is three more than six times the number of tens. Let t represent the number of tens. Write an expression for the number of fives.
What is the expressiin for seven less than four times the number of nickels
How do i figure this problem out.
how do you translate this in Algebraic Expressions
why surface tension is zero at critical temperature
Shanjida
I think if critical temperature denote high temperature then a liquid stats boils that time the water stats to evaporate so some moles of h2o to up and due to high temp the bonding break they have low density so it can be a reason
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Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
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