Question

Reena sold two articles at 840 each. On one she gains 20% and on the other she loses 20%. How
much does she profit or lose in the whole transaction? Also, find her profit or loss per cent in the whole
transaction.
​

Answer 1

SP=Rs.840

gain=20%

gain%=

CP

(SP−CP)

×100

20=

CP

(840−CP)

×100

Solving the above equation, we get,

0.20CP+CP=840

CP=

1.2

840

=Rs.700

loss=20%

loss% =

CP

(CP−SP)

×100

20=

CP

(CP−840)

×100

Solving the above equation, we get,

CP−0.20CP=840

CP=

0.8

840

=Rs.1050

Total−CP=700+1050=1750

Total−SP=840+840=1680

loss=1750−1680=Rs.70

loss%=

CP

loss

×100=

1750

70

×100=4%

Answer 2

Answer:

Sorry I can not answer.