Direction: Read the following information carefully and answer the following questions.

A class has a total of 500 students. All the students are involved in exactly one of three different activities, i.e. Dancing, Singing, and Photography. The number of students in dancing is 20% of total students in the class and the ratio of boys to girls in dancing is 3: 7. The number of students in photography is 60% of the number of students in singing. The number of girls in Singing is 50 less than the number of boys in Singing. The number of girls in photography is 87.5% of the number of boys in Photography.

This question was previously asked in

SBI Clerk Prelims: 11 July 2021 Shift 1 - Memory Based Paper

Option 3 : 240

**Calculation:**

The number of students involved in different activities is as follows:

Dancing = 100

Singing = 250

Photography = 150

Number of boys in dancing = 3/10 * 100 = 30

Number of girls involved in dancing = 100 - 30 = 70

It is given that the number of girls in singing is 50 less than the boys-

let the number of boys in singing be B and the number of girls be G

⇒B + G = 250 ----(1)

also G = B - 50 ----(2)

On solving the above two equations we get the number of boys in singing as 150 and the number of girls in singing as 100.

Number of girls in photography = 87.5% of boys

The number of girls in photography is 70 and the number of boys in photography is 80

Number of girls in dancing = 70

Number of girls in singing = 100

Number of girls in photography = 70

**Total number of girls in the class = 70 + 100 + 70 = 240**