Question 354893
"36 dimes and quarters" ___ d + q = 36 ___ 10d + 10q = 360 (A)


"worth 4 dollars and 80 cents" ___ 10d + 25q = 480 (B)


subtracting equation (A) from equation (B) to eliminate "d" ___ 15q = 120 ___ q = 8


substituting ___ d + (8) = 36 ___ d = 28