Question

A trader sold two articles in Rs 800. On one he gained 33(1/3)% and on another he gained 20%. In this whole transaction he gained 25%. Find the cost price of the second article (the one sold at 20% gain)

Answer 1

Let the cost price of artice sold at 20% gain be $X$

Then the cost price of article sold at 33.33333% gain is $800-X$

According to question,$(800-X)\times \frac{1}{3}$$+X\times \frac{20}{100}$$=\frac{25}{100}\times 800=200$

On solving it we get $X=500$

So,the cost price of article sold at 20% gain is $₹500$