Question

step for solving this problem 15=0.5n

Answer 1

15 = 0.5n....divide both sides by 0.5
15 / 0.5 = n
30 = n <==

Answer 2

0.5 is same as (1/2). Thus, the question is asking what we would multiply with half (i.e 1/2) to get 15. Answer is 30.