Question

a person sold two machines at 2400 each on selling one machine he gained 20% and on the other he lost 20% find the dealer net gain or lose%

Answer 1

A Person Sold 2 Machines at Rs.2400
His First Machine profit = 20%
Let the price at which he sold his first machine
be x
$x = 2400 + (2400 \times \frac{20}{100} ) \\ x = 2400 + (24 \times 20) \\ x = 2400 + (480) \\ x = 2400 + 480 \\ x = 2880$
x = Rs.2880
Let the price at which he sold his second machine be y
$y = 2400 - (2400 \times \frac{20}{100} ) \\ y = 2400 - (24 \times 20) \\ y = 2400 - 480 \\ y = 1920$
y = Rs.1920

Total C.P = 2400 + 2400
Total C.P = 4800
Total S.P = x + y
Total S.P = 2880 + 1920
Total S.P = 4800
Total S.P = Total C.P
Therefore, his gain or loss percent is 0 %