Question

Solve the proportion: 11/12.1= x/66 x =
A. 64.9
B. 60
C. 72.6
D. 55

Answer 1

$\dfrac{11}{12.1}=\dfrac{x}{66}\qquad\text{cross multiply}\\\\12.1x=(11)(66)\\\\12.1x=726\qquad\text{divide both sides by 12.1}\\\\x=60\\\\Answer:\ B.\ 60$

Answer 2

LMC is 66x so you have 11X5,45x/66x=x/66x then 60