Increase rupees 50 by 20%.
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Answer:
Let the cost price be Rs. 100x
20% profit means selling price is Rs. 120x.
New cost price = Rs. (100x+50)
New selling price = Rs. (120x+30)
New profit =(120x+30)−(100x+50)= Rs. 20x−20
20% less
3
10
% =
3
50
%
⇒
100x+50
20x−20
=
100
3
50
=
6
1
On cross multiplying, we have
120x−120=100x+50
⇒20x=170
⇒x=8.5
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