Question

Ravi buys some toffees at 5 for a rupee and sells them at 2 for a rupee. His gain per cent is 

A. 30% 

B. 40% 

C. 50% 

D. 150%

Answer 1

Cost Price of 1 toffee = Rs.1/5 

Selling Price of 1 toffee = Rs.1/2 

Gain = SP – CP 

= 1/2 - 1/5 

= 3/10

\(Gain\%=\frac{Gain\,\times\,100}{CP}\)

\(=\frac{\frac{3}{10}\times100}{\frac{1}{5}}\)

= 150%