Question

Que.) A class has a strength of 120 out of which 60% are boys. Find how many boys should be taken out from class so that the remaining class contain 60% girl. a) 32 b) 40 c) 120 d) 48​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

b) 40 boys should be taken out from class so that the remaining class contain 60% girl.

Step-by-step explanation:

boys = 60/100 × 120 = 72

Girls = 120-72 = 48

(number of girls remains same but their % increases) therefore,

60% = 48

1% = 48/60

100% = 48/60× 100 = 80.

Total students = 80

Girls = 48

Boys = 32

Boys were originally 72 in number but to make girls 60%

72-32 = 40 boys should be taken out.