Question

Carolyn has $2.55 in her purse in nickels and dimes. The number of nickels is nine less than three times the number of dimes. Find the number of each type of coin.

Answer 1

12 dimes 27 nickels

Explanation:

So, there are 12 dimes. Since the number of nickels is 9less than three times the number of dimes, the number of nickels is 3(12)−9=27.

Carolyn has 12 dimes and 27 nickels.

Answer 2

Hi, the answer is ;

Answer:

12 dimes and 27 nickels

Explanation:

.05N + .1d = 2.55

N= 3d - 9

0.05 (3d-9) + 0.1d = 2.55

0.15d - 0.45 + 0.1d = 2.55

0.25d = 2.55 + 0.45

0.25d = 3

D = 12

N = 3 (12) - 9

N = 36 - 9

N = 27