Question

what is 45% of 120?
\frac{45}{100}=\frac{x}{120}
x = ?

Explanation:

Step1: Cross - multiply

$45\times120 = 100\times x$

Step2: Calculate the left - hand side

$45\times120=5400$, so $5400 = 100x$

Step3: Solve for x

$x=\frac{5400}{100}=54$

Answer:

54