# RD Sharma Solutions Class 7 Percentage Exercise 11.2

## RD Sharma Solutions Class 7 Chapter 11 Exercise 11.2

#### Exercise 11.2

Q1. Express each of the following ratios as per cents

(i) 4:5

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

(ii) 1:5

$=\frac{1}{5}\\=\left(\frac{1}{5}\times 100 \right )\%$=20%

(iii) 11:125

$=\frac{11}{125}\\=\left(\frac{11}{125}\times 100 \right )\%$= $\frac{44}{5}\%$

Q2. Express each of the following per cents as ratios in simplest forms

(i) 2.5%

$\frac{2.5}{100}\\=\frac{25}{1000}\\=\frac{1}{40}$

(ii) 0.4%

$\frac{0.4}{100}\\=\frac{4}{1000}\\=\frac{1}{250}$

(iii) $13\frac{3}{4}\%$

$\frac{13.75}{100}\\=\frac{1375}{10000}\\=\frac{11}{80}$