Question

The number of pupils in a school rises by 8%. There used to be 850 pupils. how many are there now?

Answer 1

Answer: There are 918 pupils now.

• Rise in percentage:

`\dashrightarrow \: { \tt{(100 \% + 8\%) = 108\% }}`

• let current number of pupils be n

`{ \tt{n}}\dashrightarrow \: { \tt{108\% * 850}} \\ \\ { \tt{n = (108)/(100) * 850}} \\ \\ { \tt{n = 918 \: pupils}}`