Profit and Loss - General Aptitude

Q1:

A shopkeeper sells one transistor for Rs. 840 at a gain of 20% and another for Rs. 960 at a loss of 4%. His total gain or loss percent is:

A
5 15 % loss
17

B
5 15 % gain
17

C
6 2 % gain
3

D None of these

ANS:B -

5 15 % gain
17

C.P. of 1st transistor = Rs. 100 x 840 = Rs. 700.
120
C.P. of 2nd transistor = Rs. 100 x 960 = Rs. 1000
96
So, total C.P. = Rs. (700 + 1000) = Rs. 1700. Total S.P. = Rs. (840 + 960) = Rs. 1800.
 Gain % = 100 x 100 % = 5 15 %
1700 17