AFCAT II 2015 Solved Paper

Let the weight of the boy who left the class is x.
Total weight = 50 × 45 = 2250 kg
when one boy left the class total weight is (2250 – x)and no. of student left is 49.
According to question –
‌‌

2250−x

49

=(45−‌‌

100

1000

)kg
‌‌

2250−x

49

=44.9
2250 – x = 2200.1
x = 2250 – 2200.1
x = 49.9 kg