Question

How can you express (15 + 30) as a multiple of a sum of whole numbers with no common factor?

A.
2 × (7.5 + 15)
B.
3 × (5 + 10)
C.
5 × (3 + 6)
D.
15 × (1 + 2)

Answer 1

I’m pretty sure it’s D because the others have common factors or aren’t all whole numbers