RD Sharma Solutions Class 7 Percentage Exercise 11.2

RD Sharma Class 7 Solutions Chapter 11 Ex 11.2 PDF Free Download

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

\(\frac{13.75}{100}\\=\frac{1375}{10000}\\=\frac{11}{80}\)

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