Scott has $0.39 in pennies and nickles. The number of pennies is eight times the number of nickles. How many of each coin does he have?

Answer 1

p(.01) + n(.05) = .39

p = 8n

Substitute:

8n(.01) + n(.05) = .39

.08n + .05n = .39

.13n = .39

n = 3

p = 24