Question

Some articles were bought at 6 articles for Rs. 5 and sold at 5 articles for Rs. $6.$ What is the gain percent?

Answer 1

Suppose, number of articles bought $=$ L.C.M. of 6 and $5=30$
C.P. of 30 articles $=Rs.(\frac{5}{6}\times 30)=Rs.25$
S.P. of 30 articles $=Rs.(\frac{6}{5}\times 30)=Rs.36$
$\therefore$ Gain $\%=(\frac{11}{25}\times 100)\%=44\%$