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.

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

Step-by-step explanation:

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