If Rosa has 2 more nickels than dimes and they have a combined value of 70 cents, how many of each coin does she have?

Answer 1

Amount in pennies is 5N + 10D = 70

5(D+2) + 10D = 70 <--- 2 more nickels than dimes

5D + 10 + 10D = 70

15D + 10= 70

15D = 60

D=4

4 dimes and 6 nickels

4*10 + 6*5 = 40 + 30 = 70