Question

a man sell radio set for 3450and makes a profit of 15%.he sells a second radio set for rupees 3510 at loss of 10%. if on the whole ,he nither gains nor losses ,find the cost prise of the second radio set.

Answer 1

let the cost price of 1st radio be x

s.p of first radio = Rs 3450

profit = 15%

x + 15% of x = 3450

1.15x = 3450 => x = Rs3000

let the C.p of 2nd radio be Rs y

s.p of 2nd radio = 3510

loss = 10%

y - 10% of y = 3510

0.9y = 3510 => Rs 3900

cost price of 2nd radio = Rs 3900