Question

Perform the indicated operation. 3 1/2 - 1 7/10

A. 2 7/10



B. 4 2/5



C. 1 2/5



D. 1 4/5

Answer 1

D

Explanation:

3 1/2 - 1 7/10

7/2 - 17/10 (Common denominator 10, multiply 7 and 2 by 5)

35/2 - 17/10 = 18/10

1 8/10 = 1 4/5