Question

(10) The cost price of a pen increases by Rs. 10. The
selling price increases by 25%. If the new profit
increases from 20% to 25%, what is the original
cost
price per pen?
60​

Answer 1

Answer:

there it is

Step-by-step explanation:

Gain % = (Gain / CP) * 100

Loss % = (Loss / CP) * 100

SP = [(100 + Gain%) / 100] * CP

SP = [(100 – Loss %) / 100]*CP

The above two formulas can be stated as,

If an article is sold at a gain of 10%, then SP = 110% of CP.

If an article is sold at a loss of 10%, then SP = 90% of CP.

CP = [100 / (100 + Gain%)] * SP

CP = [100 / (100 – Loss%)] *