an bought bananas at the rate of 10 for45 and sold at the rate of one

1.	an bought bananas at the rate of 10 for45 and sold at the rate of one dozenas for51. Find his galn or loss per cent. .
Answer» 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 = (Loss100)/Cost price ⇒ (0.25100)/4.5 ⇒ 25/4.5 ⇒ 5.55% So, he suffered a loss of 5.55 %.

an bought bananas at the rate of 10 for45 and sold at the rate of one dozenas for51. Find his galn or loss per cent. .

Answer»

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 %.