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Ex.8.2 Q1 Compairing Quantities - NCERT Maths Class 7

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Question

Convert the given fractional numbers to percent.

(a) \(\begin{align}\frac{1}{8}\end{align}\)

(b) \(\begin{align}\frac{5}{4}\end{align}\)

(c) \(\begin{align}\frac{3}{{40}}\end{align}\)

(d) \(\begin{align}\frac{2}{7}\end{align}\)

 Video Solution
Comparing Quantities
Ex 8.2 | Question 1

Text Solution

What is Known?

Fractional numbers.

What is Unknown?

Conversion of Fractional numbers into percentage.

Reasoning:

To convert fraction into percentage we will have to multiply the fraction by \(100\) because \(1\%\) means \(1\) part of \(100\) i.e. \(1/100.\)

Steps:

\(\begin {align}{\rm{(a)}}\quad\,\frac{1}{8} &= \frac{1}{8} \times 100 \% \\&= 12.5\% \end{align}\)

\(\begin {align}{\rm{(b)}}\quad\frac{5}{4} &= \frac{5}{4} \times 100\% \\&= 125 \% \end{align}\)

\(\begin {align}{\rm{(c)}}\quad\frac{3}{{40}} &= \frac{3}{{40}} \times 100\% \\&= 7.5 \% \end{align}\)

\(\begin {align}{\rm{(d)}}\quad\frac{2}{7} &= \frac{2}{7} \times 100\% \\&= 28\frac{4}{7} \% \end{align}\)