Ravi buys some toffees at 5 for a rupee ...

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

Verified by Experts

Cost at which ravi bought=`1/5 `rupees.
He sells them at =>`1/2 `rupees
Gain percent=`(1/2 -1/5)/1/5 xx 100=150%`

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