Question 1033151
If Tim has $4.50 in change, over dimes, nickels, and quarters,..then:
25Q+10D+5N=450.  Using dimes as our standard, we get:
Q=D+4;
N=3D, so:
25(D+4)+10D+5(3D)=450
25D+100+10D+15D=450
50D=350
D=7
If D=7, then Q=11, and N=21.
Let's see;
11(25)+10(7)+21(5)=275+70+105=450
Tim has 11 quarters, 7 dimes, and 21 nickels!!!!!!!!