16. A man sells an article at a loss of 10%. If he had40 more he would

1.	16. A man sells an article at a loss of 10%. If he had40 more he would have gained 10%. "Thesold it for Rs.cost price of the article is:-
Answer» SP = CP - CP10/100SP = CP(1 - 1/10)SP = CP9/10 SP + 40 = CP(1 + 10/100)SP + 40 = CP(11/10)CP(9/10) + 40 = CP(11/10)CP(2/10) = 40CP = 40*5CP = 200 Cost price is RS. 200

16. A man sells an article at a loss of 10%. If he had40 more he would have gained 10%. "Thesold it for Rs.cost price of the article is:-

Answer»

SP = CP - CP*10/100SP = CP(1 - 1/10)SP = CP*9/10

SP + 40 = CP(1 + 10/100)SP + 40 = CP(11/10)CP(9/10) + 40 = CP(11/10)CP(2/10) = 40CP = 40*5CP = 200

Cost price is RS. 200