Question

A class has 30 girls more than boys one day one boy is absent the number of years was twice as that of boys find the number of boys and girls

Answer 1

Answer:

According to first condition:

number of boys and number of girls in a class are the same.

So suppose no. of boys and girls be X & X, therefore total Student will be 2X.

According to second condition:

On a day when only ten boys were absent, the number of the girls was twice the number of the boys.

So, Boys =X-10 & Girl = 2(X-10)

2(X-10) = X

2X-20=X

2X-X=20

X=20

no. Of boy =no. Of girl=20

So total length class = 20+20=40 student

But according to second condition 10 boys were absent. So total length of class on that day = 40–10=30 student

Finally answer : 30 student present in class

Step-by-step explanation:

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