Question

Thomas collects dimes and quarters in his change jar. If he has 6 more dimes than quarters, and the total amount of money in the jar is $30.00, find the number of each type of coin in the jar.

Answer 1

set up 2 equations

--> 0.1d + 0.25q = 30
--> d = q + 6

use substitution ( replace d with "q+6")
---> 0.1(q+6) + 0.25q = 30

multiply equation by 100 to get rid of decimals
10(q+6) + 25q = 3000

can you solve for q?

Answer 2

@dumbcow yes I can! thanks.