Factors and Multiples - JSS2 Mathematics Past Questions and Answers - page 2

To find a percentage of a quantity, multiply the quantity by the percentage (expressed as a decimal).

0.15×80=12

To decrease 90 by 30%, follow these steps:

1. Find 30% of 90:

   0.30×90=27

2. Subtract this value from 90:

   90−27=63