Xavier Aptitude Test 2018 Paper

Question : 59 of 99

Marks: +1, -0

The number of boys in a school was 30 more than the number of girls. Subsequently, a few more girls joined the same school. Consequently, the ratio of boys and girls became 3:5. Find the minimum number of girls, who joined subsequently.

31
51
52
55
Solution not possible

Validate

Solution:

b = g + 30

{g+30}/{g+x}

3/5

... (1)
3x = 150 + 2g
Go through options 52 satisfied the equation (1).

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