Homework Help: math

Posted by cool kid on Tuesday, September 7, 2010 at 9:24pm.

karen saves her change and has dimes nickels and pennies totaling $4.52. If there is 1 more dime than three times the number of nickels and 10 more pennies than nickels, how many of each type of coin are there?

math - MathMate, Tuesday, September 7, 2010 at 10:18pm
Let N=the number of nickels (5 cents).
Dimes (10 cents), D = 3N+1
Pennies (1 cent), P = N+10
Then
5N + 10(3N+1) + 1(N+10) = 452
36N + 20 = 452
Solve for N (=12) and the rest of the coins.

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