SOLUTION: A parking meter contains dimes and quarters only. There are 4 fewer quarters than dimes. If x represents the number of dimes, write an algebraic expression that represents the tota

Algebra ->  Customizable Word Problem Solvers  -> Coins -> SOLUTION: A parking meter contains dimes and quarters only. There are 4 fewer quarters than dimes. If x represents the number of dimes, write an algebraic expression that represents the tota      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 898123: A parking meter contains dimes and quarters only. There are 4 fewer quarters than dimes. If x represents the number of dimes, write an algebraic expression that represents the total value of all coins in the meter in cents. Simplify the expression.
Answer by josgarithmetic(39615) About Me  (Show Source):
You can put this solution on YOUR website!
d for dimes
q for quarters
q=-4+d or q=d-4

Amount of money is 0.1d%2B0.25q dollars, or by substitution for q,
amount of money is 0.1d%2B0.25%28d-4%29
0.1d%2B0.25d-1
highlight%28d-1%29.

You wanted x to represent the count of dimes, so you use this instead and say the amount of money is x-1.