Question

Convert:

(i) $\frac{4}{5}$ into a percentage
(ii) $\frac{7}{4}$ into a percentage
(iii) 45% into a percentage
(iv) 105% into a percentage
(v) 15% into a percentage
(vi) 12 : 25 into a percentage

Answer 1

We have:

(i) $\frac{4}{5}$= $\left(\frac{4}{5}\times 100\right)\%=\left(4\times 20\right)\%=80\%$

(ii) $\frac{7}{4}$=$\left(\frac{7}{4}\times 100\right)\%=\left(7\times 25\right)\%=175\%$

(iii) 45% = $\left(\frac{45}{100}\right)=\left(\frac{9}{20}\right)$

(iv) 105% =$\left(\frac{105}{100}\right)=\left(\frac{21}{20}\right)$

(v) 15% =$\frac{15}{100}=\frac{3}{20}$= 3 : 20

(vi) 12 : 25 = $\frac{12}{25}=\left(\frac{12}{25}\times 100\right)\%=\left(12\times 4\right)\%=48\%$