Let number of boys = x
Let number of girls = y
Therefore x/y = B and y/x = G
10(B + G) = 10[(x/y) + (y/x)] = 10[(x2 + y2)/xy] > 10
If the ratio of boys to girls in a class is B and the ratio of girls to boys is G; then 10(B + G) is ?
Options:
(A) Equal to 3
(B) Less than 3
(C) More than 10
(D) Less than 10
(E) none of these
(C)

On dividing 427398 by 15 we get the remainder 3, so 3 should be subtracted
Find the least number must be subtracted from 427398 so that remaining no.is divisible by 15?
Options:
(A) 2
(B) 3
(C) 5
(D) 7
(E) 8
(B)

Percentage of profit = 35/15 * 100 = 233%

If the cost price of 50 articles is equal to the selling price of 15 articles, then the gain or loss percent is?
Options:
(A) 16
(B) 127
(C) 12
(D) 18
(E) 233
(E)