Question

A shopkeeper sold two pair of j hieans for 720 each gaining 20% on one and loss ing 20% on the other find his gain or loss

Answer 1

Hi,
your answer is as follows:-

First case
sp=rs720
p=20%
sp=100+p/100×cp
720=100+20/100×cp
720×100/120=cp
rs600=cp
second case
sp=rs720
loss=20%
sp=100-l/100×cp
720=100-20/100×cp
720×100/80=cp
72000/80=cp
rs900=cp
total cp=900+600=1500
total sp=720+720=1440
loss=cp-sp
=1500-1440
=60
loss%=60/1500×100
=4%


hope it helps..............






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