Question

5. Out of 40 children in a class, 25 are boys and the remaining are girls. Find the ratio of
a. Boys to girls.
b. Boys to total number of children.
c. Total number of children to girls.
(MCO)​

Answer 1

Answer:

Step-by-step explanation:

Let the number of boys be 7x and that of girls be 5x.

According to the given condition, we have

Number of boys = Number of girls +8

⇒7x=5x+8

⇒7x−5x=8 ....[Transposing 5x to LHS]

⇒2x=8

⇒x=  

2

8

​  

=4

Therefore, number of boys =7×4=28 and number of girls =5×4=20

So, total number of children in the class =28+20=48.

Hence, the class strength is 48.

Answer 2

Step-by-step explanation:

(a) =25/15 =5/3

(b) =25/40 =5/8

(c) =40/15 =8/3

girls are 40 - 25 = 15