Nandlal bought 20dozens of notebooks at ₹156per dozen. He sold 8 dozen of them at 10% gain and the rest 12 dozen at 12%gain. Find his gain percent in the whole transaction
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Answer:16%
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Step-by-step explanation:
20 dozen notebook bought in = 156 rs.
price of 1 dozen = 7.80 rs.
price after 10% gain = 7.80 + 10% of 7.80
= 7.80 + 0.78
= 8.58 rs.
price after 20% gain = 7.80 + 20% of 7.80
= 7.80 + 1.56
= 9.36 rs.
so total sale = 8*8.58 + 12 * 9.36
= 68.64 + 112.32
= 180.96 rs.
as we know that
%profit =180.96-156/156*100
=16
profit = 16%
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