Question

a man bought bananas at the rate 10 for rupee 15 and sold at the rate 1 dozen bananas for rupee 15 find his gain or loss percentage

Answer 1

Solution :-
Cost of 10 bananas = Rs. 45
Cost of 1 banana = 45/10
= Rs. 4.5
Selling price of 12 bananas = Rs. 51
Selling price of 1 banana = 51/12
= Rs. 4.25
Loss = Cost price of 1 banana - Selling price of 1 banana
Loss = 4.5 - 4.25
Loss = Rs. 0.25
Loss percent = (Loss*100)/Cost price
⇒ (0.25*100)/4.5
⇒ 25/4.5
⇒ 5.55%
So, he suffered a loss of 5.55 %.

Answer 2

Answer:

Cost of 10 bananas= Rs 15

Cost of 1 banana = 15/10= 1.5

Selling Price of 12 bananas= Rs 15

Selling Price of 1banana= 15/12=Rs 1.25

Loss= Cost price of 1 banana - Selling price of 1 banana

Loss= 1.5 - 1.25

Loss= Rs 0.25

Loss%= Loss/Cost price×100

Loss% =0.25/1.5×100

0.25/1.5×100 =50/3% answer