The number of students in a primary school increases by 20% every year. If the number of students in the previous year was 700, then what will be the number of students in the present year ?

600

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720

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840

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960

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Solution

The correct option is C 840
Given, the number of students in the previous year = 700
Every year number of students increases by 20%

Then, number of students in the coming year = (100 + 20)% of 700
= 120% of 700

= $\frac{120}{100} \times 700$

= $1.2 \times 700$

= 840

Therefore, number of students in the coming year will be 840

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