how many of each type was collected

Question

A youth organization collected nickels and dimes for a charity drive. By the end of the 1-day drive, the youth had collected $64.9064.90. If there were fivefive times as many dimes as nickels, how many of each type of coin was collected?

Answer 1

d = 5n

.10d + .05n = 649064.90

Substitute the first equation into the second and solve for n. Then multiply n by 5 to get d.