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MandiePandie
40 dimes is $4.00. you would need $1 in nickles. 2 nickles is 10 cents. so you would need 20 nickles.

10x+160=300
      -160  -160
10x=140
divide both sides by 10
x=14
$14

Answer:

20

Step-by-step explanation:

because there are 40 dimes so left over is 20 nickels