Ex.8.2 Q2 Comparing Quantities Solutions - NCERT Maths Class 8

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Question

On Sunday \(845 \) people went to the zoo. On Monday only \(169\) people went. What is the per cent decrease in the people visiting the zoo on Monday?

Text Solution

What is known?

Number of people visited zoo on Sunday \(= 845\)

Number of people visited zoo on Monday \(= 169\)

What is unknown?

Percent decrease in the people visiting zoo on Monday

Reasoning:

Finding the decrease in number of people and calculating it for \(100\), will get us the percentage decrease.

Steps:

Decrease in the number of people \(= 845-169 = 676\)

Percentage decrease in the number of people

\[\begin{align}&= \frac{{{676}}}{{{845}}}{ \times 100}\\ &= 4 \times 20\\ &= 80\% \end{align}\]

Percentage decrease in the people visiting zoo on Monday \(= 80\%\)