SOLUTION: When Courtney collected her change she realized that she had five times as many dimes as quarters. Her dimes and quarters totaled $5.25. How many quarters did she have?

Question 819758: When Courtney collected her change she realized that she had five times as many dimes as quarters. Her dimes and quarters totaled $5.25. How many quarters did she have?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
d = 5q
10d + 25q = 525
---
10d + 25q = 525
10(5q) + 25q = 525
50q + 25q = 525
75q = 525
---
q = 7
d = 35
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Calculate and graph the linear regression of any data set:
https://sooeet.com/math/linear-regression.php
RELATED QUESTIONS
A girl has a collection of dimes and quarters. She has 4 times as many quarters as dimes. (answered by jorel1380,ikleyn)

Carole has 70 dimes and quarters. Her quarters are worth as much as her dimes. How many... (answered by Alan3354)

Kelly had two times as many quarters as dimes she has 18 quarters how many dimes does she (answered by josgarithmetic)

Susan's change purse contains quarters, dimes, and nickels. She has twice as many nickels (answered by stanbon,killahzsmilez)

Use Cramer's Rule to solve. Sylvia has a piggy bank that contains nickels, dimes, and... (answered by solver91311)

Ana has a piggy bank that contains nickels, dimes, and quarters. When she opens the bank... (answered by josgarithmetic,ikleyn)

Addie has $2.15 in her change purse, consisting of nickels, dimes, and quarters. If she... (answered by ankor@dixie-net.com)

Jane has $12:00 in quarters and dimes. She has five times as many dimes,d, as quarters.q. (answered by stanbon)

Jane has some nickels, dimes, and quarters that total 1.90. She has twice as many... (answered by Fombitz)