Question

When a women sells 20 articles for Rs. 160, there is 40% loss. How many articles should she sell for Rs. 240 in order to earn 20% profit ?

Answer 1

Given when she sells at Rs.$160$ for $20$ articles, she get $40\%$ loss.

Then, to get $20\%$ profit selling at Rs.$240$ for let ${}^{\prime }{P}^{\prime }$ articles

$\Rightarrow \frac{\frac{160}{20}}{60}=\frac{\frac{240}{p}}{120}$

$\Rightarrow 120\times 160\times P=20\times 70\times 240$

$\Rightarrow P=\frac{20\times 70\times 240}{120\times 160}=15$ articles