Answers

2015-02-22T19:13:24+05:30
You have to choose the price of items strategically for easy calculation.
The total cost price and total selling price should be divisible by both 5 and 7, so the total cost and selling price should be LCM of 5 and 7 = 35.
The number of items bought is 7 and let the price for each be 5.
Total cost price = 35
Total selling price for 5 items is 35 (same as cost price for 7 items).
Thus selling price of individual item is 7.
CP < SP
So, Gain percent = (Gain/CP)*100 = (2/5)*100 = 40%
1 4 1
Please choose my answer as the best answer
2015-02-22T22:58:59+05:30
Cp of 7 articles=Sp of 5 articles=x
Cp of 1 articles=x/7
Sp of 1 article=x/5

profit=SP-cp=x/5 - x/7 =7x-5x/35= 2x/35

Profit %=2x/35 X  7/x  X 100=40%

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