Question

Select the correct answer.

How can you express (15 + 30) as a multiple of a sum of whole numbers with no common factor?
A. 2 x (7.5 + 15)
B. 3x (5 + 10)
C. 5x (3+6)
D. 15 x (1 + 2)

Answer 1

D. 15 x (1 + 2)

Explanation:

answer A and B have the common factor of 5, meanwhile answer C has the common factor of 2.