SOLUTION: Charles has $ 2.75 in dimes and nickles. The number of nickels is one less than twice the number of dimes. How many of each type of coin does he have?
Algebra ->
Customizable Word Problem Solvers
-> Coins
-> SOLUTION: Charles has $ 2.75 in dimes and nickles. The number of nickels is one less than twice the number of dimes. How many of each type of coin does he have?
Log On
Question 819782: Charles has $ 2.75 in dimes and nickles. The number of nickels is one less than twice the number of dimes. How many of each type of coin does he have? Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! 5n + 10d = 275
n = 2d - 1
---
5n + 10d = 275
5(2d - 1) + 10d = 275
10d - 5 + 10d = 275
20d = 280
---
d = 14
n = 27
---
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
