Question

A person sells 40 apples per rupee and incurs a loss of 4%. How many apples per rupee he hasto sell to have a gain of 8 %.

Answer 1

i have short cut method...
40 : 96 : ? : 108
loss of 4 % so we take 96 ..and he want profit of 8 ‰ so we take 108

108* 40 / 96 = 45