Question

$\text{Find the whole quantity if}\text{(a)}12\%\text{of it is}1080\text{(b)}70\%\text{of it is 14 minutes}\text{[3 marks]}$

Answer 1

$\text{(a)}\text{Let the whole quantity be}x\text{Given:}12\%\text{of}x=1080\frac{12}{100}\times x=1080x=1080\times \frac{100}{12}=9000\text{[1.5 marks]}$



$\text{(b)}\text{Let the whole quantity be}x\text{Given:}70\%\text{of}x=14minx\times \frac{70}{100}=14minx=14\times \frac{100}{70}=20min\text{[1.5 marks]}$