Question

Lisa became a great singer. She was so famous she had 12 bodyguards at one concert. At the next concert she had 15 body guards. What is the percent of change?

Answer 1

first concert : 12 bodyguards

second concert : 15 bodyguards

12 x = 15

x = 15/12

x = 1.25

Multiply by 100 to obtain the percentage form

1.25 x 100 = 125

Subtract 100

125-100 = 25

It was a 25% increase change