Question

I need help with this ASAP

Answer 1

3 13/20 mm.

Explanation:

3/4 + 1 2/5 + 1 1/2

= 3/4 + 7/5 + 3/2

The LCD of 2, 4 and 5 = 20 so we can write the above as

15/20 + 28/20 + 30/20

= 73/20

= 3 13/20 mm (answer).