Question

In school ,out of 900 students, 350 are boys. Find the ratio of

A) Number of girls to the number of boys.

B) Number of girls to the total number of students.​

Answer 1

Answer:

Correct option is

D

76

Let there be 100 students.

Then number of boys =

5

3

×100=60

Number of girls =

5

2

×100=40

Total scholarship holders =20 % of 60 + 30 % of 40=

100

20

×60+

100

30

×40 = 12+12=24

Number of students without scholarship =100−24=76

∴% of students without scholarship =

100

76

×100=76 %

Answer 2

A) NO of girls - 550

no . of boys - 350

ratio 550:350

11:7

b) no of girls - 550

total - 900

550:900

11:18

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