A number is increased from 125 to 150; find the percentage increase.

Given:

Initial Number = 125

Final Number = 150

Increase in number = Final number - Initial number

= 150 - 125 = 25

Percentage increase = $\dfrac{\text{Increase in number}}{\text{Initial Number}} \times 100$ %

= $\dfrac{25}{125} \times 100$ %

= $\dfrac{2,500}{125}$ %

= 20%

The percentage increase = 20 %.