A vendor buys oranges at Rs 26 per dozen and sells them at 5 for Rs 13. Find his gain percent.
Given CP of 1 dozen oranges = Rs. 26
CP of 1 orange = 26/12
= Rs. 2.16
CP of 5 oranges = 2.16 x 5
= Rs. 10.8
Now, SP of 5 oranges = Rs. 13
Gain = SP – CP
= Rs. (13- 10.8)
= Rs. 2.2
Gain %= (Gain/CP) x 100
= (2.2/10.8) x 100
Gain = 20.3%