Question 85
If the cost price of 120 articles is equal to the selling price of 80 articles, find the profit percent.
Solution
Let say,cost price of one article is c and selling price of one article is s.
So, cost price of 120 article is 120c.
And selling price of 80 articles is 80s.
So, 120c=80s.
or,$$(s/c)=120/80=1.5.$$
or,$$(s-c)/c=1.5-1=0.5$$.
So,Profit percentage is 50%.
C is correct choice.
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