Question

during the summer each student got 5% taller erik is 151.2 cm taller after the summer how tall was be before the summer?

Answer 1

Let's call the height before summer x.

1.05x = 151.2

x = 151.2/1.05 = 144

Erik was 144 cm before summer.

Answer 2

You have to multiply 151.2 X 5% =7.56
Then you subtract 151.2 - 7.56
Before the summer he was 143.64cm