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

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

Explanation

We know that th CP of 1 toffee =₹1/5

SP of 1 toffee = ₹1/2

Since SP is more than CP it's Gain

Gain=SP−CP

=1/2−1/5

=3/10

∴Gain%=(Gain×100)/CP

=((3/10)×100)/(1/5)

=150%