Book Maths Puzzle Numerical Ability

a woman bought two parcels of toffees, the same number in each parcel. the first she bought at 25 p each but the second at 3 for 65p. she mixed then all together and sold them at rs. 3.50. a dozen. find her gain percent.

opt.
1. 10%
2. 15%
3. 20%
4. 25%

Read Solution (Total 1)

Let the number of toffees in a parcel is x..
CP of first parcel =25x
CP of 2nd parcel =65/3*x=65x/3
Total CP=25x+65x/3=140x/3
She misxed the toffees and sold it at 3.50 a dozen.
So SP=350/12*(2x)=175x/3
Profit =sp=-CP=35x/3
Profit%=(35x/3)/(140x/3)*100=25%
Ans 25%
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Book Other Question

Articles are bought at rs. 42 a dozen and sold at rs. 85 a score. what is the profit per cent? mini buys sweets at 4 for 90 p and an equal number at 5 for 90 p and sells the whole at 9 for 180 p. find her gain or loss percent.