Question

Number of boy in a class is 6 more than twice the number of girls why there are 20 boys in the class.

Answer 1

Answer:

The number of girls in the class is 7

Step-by-step explanation:

Let number of boys and girls be x and y respectively.

By the given condition, the number of boys is 6 more than twice the number of girls in the class. Then

x = 2y + 6 ..... (1)

Also given than that are 20 boys in the class, i.e., x = 20 and from (1), we get

20 = 2y + 6

or, 2y = 20 - 6

or, 2y = 14

or, y = 7

Therefore there are 7 girls in the class.