Question

The amount that a fruit seller receives on selling 120 orange is the same as the amount he had to pay to buy 140 orange his gain percent is what

Answer 1

Let the CP of 140 oranges be x
SP of 120 oranges = x
CP of 120 oranges = 6x/7
Gain = x-(6x/7) = x/7
Gain % =
$\frac{x}{7} \div \frac{6x}{7} \times 100$

=(50/3)%