Which equation could be used to solve the problem below?
The number of students in a school increased by 150. The school originally had 500 students. By what percent did the number of students increase?
A)x % × 150 = 500
B)x % × 500 = 150

Question

Which equation could be used to solve the problem below?
The number of students in a school increased by 150. The school originally had 500 students. By what percent did the number of students increase?
A)x % × 150 = 500 
B)x % × 500 = 150

Quizplus · Accepted Answer

The formula for calculating percent increase is:
Percent increase = (Amount of increase ÷ Original amount) × 100
In this case, the amount of increase is 150 and the original amount is 500.
So the formula becomes:
Percent increase = (150 ÷ 500) × 100
Simplifying this gives:
Percent increase = 0.3 × 100
Percent increase = 30%
Therefore, the correct formula to use is not given in the options but can be derived from the known formula.

Which Equation Could Be Used to Solve the Problem Below