Question

Sandy has 20 coins that are nickels

and dimes. If she has x nickels, how
many dimes does she have?

Answer 1

Number of dimes Sandy has = (20 - x)

Explanation:

Let the number of nickels Sandy has = N

And the number of dimes she has = D

Total number of coins she has = 20

N + D = 20 ------(1)

If she has the number of nickels = x

Therefore, expression that represents the number of dimes she has will be

x + D = 20

D = (20 - x)

Number of dimes Sandy has = (20 - x)