Question

a seller sold two trousers of 900 each on one he gains 10% and on the other, he lost 10%. find his total loss or gain.

Answer 1

let the presume that the C. P is 100
S.P =110
If S. P is 110 then C. P is 100
IF S. P is 900=100/110*900
=8.1
Loss = 100/90*900
1000=loss
Profit = 1800-1000
=800

Answer 2

Answer:

0.99%

Step-by-step explanation:

First trouser case

Selling  of trouser = Rs. 900

Profit = 10 %

$CP = \frac{SP \times 100}{100+P\%}$

$CP = \frac{900 \times 100}{100+10\%}$

$CP = 818.18$

Second trouser case

Selling  of trouser = Rs. 900

Loss = 10%

$CP = \frac{SP \times 100}{100-L\%}$

$CP = \frac{900 \times 100}{100-10\%}$

$CP = 1000$

Now total CP = Rs.818.18+Rs.1000=Rs.1818.18

Total SP = Rs. 900+Rs.900 = Rs.1800

CP >SP

So, Loss

Loss% = $\frac{CP-SP}{CP} \times 100$

Loss% = $\frac{1818.18-1800}{1818.18} \times 100$

Loss% = $0.99\%$

Hence the loss% is 0.99%