Question

Rajiv sold an article for rs.56 which cost him rs.x. if he had gained x% on his outlay, what was his cost?

Answer 1

The amount he gained = 56-x

Percentage gain = x%

(56-x)/x X 100 = X

56-x = x²/100

This simplifies to 


x² + 100x - 5600 = 0

This gives x = 40


His cost = Rs. 40

See the attached image

Answer 2

Answer:

Step-by-step explanation:

The amount he gained = 56-x

Percentage gain = x%

(56-x)/x X 100 = X

56-x = x²/100

This simplifies to

x² + 100x - 5600 = 0

This gives x = 40

His cost = Rs. 40