Question

Ariana has $1.40 worth of nickels and dimes. She had twic as many nickels as dimes. Determine the number of nickels and the number of dimes that Ariana has.

Answer 1

She has 7 dimes and 14 nickles.

Explanation:

Answer 2

A) .05n + .10d = $1.40

B) n = 2d

We multiply equation A) by -20

A) -n -2d = -28.00 then add it to B)

B) n -2d = 0

-4d = -28.00

dimes = 7

Therefore, nickels = 14

7 dimes + 14 nickels = $1.40

Explanation: