Question

Articles bought at 10 for Rs.8, are sold at 8 for Rs.10. Find the
gain percentage. Also find the number of articles bought and
sold in order to gain Rs.144.

Answer 1

Step-by-step explanation:

Cost price of 10 articles (CP) = Rs. 8

Cost price of 1 article = 8/10 = Rs. 0.8

Selling price of 8 articles = Rs. 10

Selling price of 1 article (SP)10/8 = 5/4 =

Rs. 1.25

Here SP > CP

So it is a gain

Gain = SP - CP

= 1.25 -0.8

= 0.45

i.e Profit = Rs. 0.45

Profit % = (Gain/CP) * 100

= (0.45/0.8) * 100

= (45/0.8)

= 450/8

= 56.25

i.e Gain %= 56.25 %.

.. Gain percent is 56.25 %

Answer 2

Answer:

Cost price of 10 articles (CP) = Rs. 8

Cost price of 1 article = 8/10 = Rs. 0.8

Selling price of 8 articles = Rs. 10

Selling price of 1 article (SP)10/8 = 5/4 = Rs. 1.25

Here SP > CP

So it is a gain

Gain = SP - CP

= 1.25 - 0.8

= 0.45

i.e Profit = Rs. 0.45

Profit % = (Gain/CP) * 100

= (0.45/0.8) * 100

= (45/0.8)

= 450/8

= 56.25

i.e Gain % = 56.25 %.

∴ Gain percent is 56.25 %  

hope it helps