John sold an article to Peter at 20% profit andPeter sold it to Mohan

1.	John sold an article to Peter at 20% profit andPeter sold it to Mohan at 5% loss. If Mohanpaid 912 for the article; find how much didJohn pay for it ?
Answer» Let John buy the article at a cost C. Peter buys it at (100+20)C/100 = 1.2 C Peter sells to Mohan at = [ (100-5) /100 ] * 1.2 C = 0.95 * 1.2 C = 1.14 C Mohan buys it for 1.14 C = Rs 912 C = Rs 912 / 1.14 = Rs 800 John paid Rs 800 for the article.

John sold an article to Peter at 20% profit andPeter sold it to Mohan at 5% loss. If Mohanpaid 912 for the article; find how much didJohn pay for it ?

Answer»

Let John buy the article at a cost C.

Peter buys it at (100+20)C/100 = 1.2 C

Peter sells to Mohan at = [ (100-5) /100 ] * 1.2 C = 0.95 * 1.2 C = 1.14 C

Mohan buys it for 1.14 C = Rs 912

C = Rs 912 / 1.14 = Rs 800

John paid Rs 800 for the article.