Question

15. If 7% of the sale price of an article is equivalent to 8% of the cost price and 9%
of the sale price exceeds 10% of the cost price by Re. 1; find the amount of profit
and cost price of it.​

Answer 1

Answer:

350

Step-by-step explanation:

Suppose C.P. = Rs. x and S.P. = Rs. y

⇒ 7% of y = 8% of x, i.e. 7y = 8x................(i)

and 9% of y = 10% of x + 1 i.e 9y = 10x + 100.............(ii)

From (i) we have y=

7

8x

Putting the value of y in (2) we get

9×

7

8x

=10x+100⇒72x=70x+700⇒2x=700⇒x=350