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:

Answer: There are 918 pupils now.

• Rise in percentage:

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

• let current number of pupils be n

${ \tt{n}}\dashrightarrow \: { \tt{108\% \times 850}} \\ \\ { \tt{n = \frac{108}{100} \times 850}} \\ \\ { \tt{n = 918 \: pupils}}$