Question

A man sold two washing machines for rps 9900 each. He sold one at a gain of 10%,and the other at a loss of 10% .find his gain or loss % in the whole transaction

Answer 1

Sp of 1st wm =9900+990 =10890
Sp of 2nd wm = 9900 - 990 =8910
Now total cp = 2*9900 =19800
Total sp = 10890 + 8910 =19800
Hence total gain = 0 %

Answer 2

Answer:

SP of washing machine 1 = Rs. 9900

Gain = 10 percent.

So let the CP be x,

So, 9900 ( SP)= x + 10x/100 = 11x/10; So, x = 99000/11 = 9000 rupees

SP of washing machine 2 Rs. 9900

Loss = 10 percent

So, let the CP be x,

So, 9900 (SP) = x - 10x/100 = 9x/10; SO, x = 99000/9 = 11000 rupees

So, Total CP = 9000 + 11000 = 20000 rupees

Total SP = 9900 + 9900 = 19800 rupees

So, profit = 200 rupees

So profit percent = 200/ 20000 * 100 = 1 percent

Answer : Gain percent of 1 percent

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