Question

In a class of 50 students .20% are girls and rest are boys find the number
of girls and boys in the class.​

Answer 1

The number of girls in class is 10 and the number of boys in class is 40

Step-by-step explanation:

GIVEN

Total value = 50

Percent = 60%

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To Find

The number of girls in class and the number of boys in class

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We know that,

Percent = part / whole × 100

Part value = Percent × whole / 100

Part value = 20 × 50 / 100

Part value = 1000 / 100

Part value = 10

Number of girls in the class is 10

Now,

Let's find the number of boys in the class

Boys = Total students - Girls

Boys = 50 - 10

Boys = 40

Number of Boys = 40

Number of boys in the class is 40

The number of girls in class is 10 and the number of boys in class is 40

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Important

If part value and total value is given and we need to find percent

Then,

Percent = part / whole × 100

If percent and total value is given and we need to find part value

Then,

Part value = percent × whole / 100

If percent and part value is given and we need to find part value

Then,

Whole = part / percent × 100