A jar contains 60 nickels and dimes worth $4.30. How many of each kind of coin are in the jar? Solution 0.05N + 0.10D = 4.30 and N + D = 60 So lets solve! N = 60 -D So... 0.05(60-D) + 0.10D = 4.30 3 - 0.05D + 0.10D = 4.30 0.05D = 1.30 D = 26 Since we have 26 Dimes, we have 60-26 = 34 nickels.