Alastair Duncombe, Belle Cottingham, Rob Ellis and, Amanda George Solutions for Chapter: Percentages, Exercise 1: Exercise 1

Increase $\$1250$ by $26\%$.

Increase $230 \mathrm{km}$ by $232\%$.

Decrease $87.5 \mathrm{g}$ by $8\%$.

Decrease $5400 \mathrm{m}$ by $9.5\%$.

A clothes shop reduces all prices by $20\%$ in a sale. Find the sale price of the following item.

Original price$=\$45$

A clothes shop reduces all prices by $20\%$ in a sale. Find the sale price of the following item.

Original price$=\$2.40$

Joselito wants to increase $\$45$ by $200\%$. His working is below.

For a $200\%$ increase, the multiplier is $2.00$.

$\$45\times 2=\$90$

Find the correct answer and explain his mistake.

Write two questions asking for two different percentage changes, where the absolute change is the same for both.