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Conversion between Decimal and Percentage

If 60

Question

If $60$ % of the students in a school are boys and number of girls is $812$ , how many boys are there in the school?

A

1128

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B

1218

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C

1821

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D

1281

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Solution

The correct option is B $1218$
Percentage of girls $= 100 - 60 = 40$ %
Total number of students $= \frac{812}{40} \times 100 = 2030$
Hence, number of boys $= \frac{60}{100} \times 2030 = 1218$ .

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