Question

Given the equation, D=m/v. If D = 3/6 and v = m + 3, them m =
A) -3
B) 1
C) 3

Answer 1

$\dfrac{m}{m+3}=\dfrac{3}{6}\\ \dfrac{m}{m+3}=\dfrac{1}{2}\\ 2m=m+3\\ m=3$