SOLUTION: how do you solve this word problem? please help! Warren has 40 coins (all nickels, dimes, and quarters) worth 4.05. He has 7 more nickels than dimes. How many quarters does w

Algebra ->  Customizable Word Problem Solvers  -> Coins -> SOLUTION: how do you solve this word problem? please help! Warren has 40 coins (all nickels, dimes, and quarters) worth 4.05. He has 7 more nickels than dimes. How many quarters does w      Log On

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Question 101457This question is from textbook
: how do you solve this word problem?
please help!

Warren has 40 coins (all nickels, dimes, and quarters) worth 4.05. He has 7 more nickels than dimes. How many quarters does warren have?
Thank you so muchh
 This question is from textbook

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
x=dimes, x+7=nickels, 40-(2x+7)=quarters

10x+5(x+7)+25(33-2x)=405 ... 10x+5x+35+825-50x=405

455=35x ... 13=x ... 20=x+7 ... 7=40-(2x+7)