Question

a man sold two washing machines for rs9900 each. he sold one at a gainof 10% and the other at a loss of 10% find his gain or loss%in the whole transaction.

Answer 1

loss of him =0
because 10-10

Answer 2

let the cost price of one washing machine be X and cost price of second washing machine be y,
then, x-9900=10x/100
9900-y=10y/100
so, 9x/10=9900
and, 11y/10=9900
thus, x=11000
y=9000
therefore,total cost price=11000+9000=20000
and, total selling price=9900+9900=19800
thus, loss =cp-sp
=20000-19800
=200
hence loss%=200/20000*100
so loss percentage is equals to 1%
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