Examples
(6) A man sells two houses for Rs. 256358 each. On one he gains 15 % and on the other he loses 15 %. Find his gain or loss per cent on the whole transaction.
Soln. In such a problem selling price is immaterial. There is always a …
(1) Find gain or loss percent, when :
(i) C.P. = Rs. 12.00 and S.P. = Rs. 13.80.
(ii) C.P. = Rs. 8.00 and S.P. = Rs. 5.20
Soln. (i) Gain = RS. ( 13.80 – 12.00 ) = Rs.1.80…
☼ Trade Discount ( or Discount ) : The reduction made on the marked price of an article is called as Trade Discount.
If discount is given, then selling price is different than marked price. It is also calle…
☼ Loss : If S.P. < C.P., the seller is said to have incurred a loss.
Loss = C.P. – S.P.
Loss or gain is always reckoned on C.P.
( i.e. On calculating gain or loss C.P. is taken as 100 % )
When a per…
☼ Cost Price : The price at which an article is purchased, is called its cost price. Symbolically it is written as C.P.
☼ Selling Price : The price at which an article is sold, is called it…
(16) (i) If the diameter of a circle increases by 30%, its circumference will increase by how many percentage ?
(ii) In above example area of the circle will increase by how many percent ?
Soln.
(11) The value of a machine depreciates at the rate of 10 % per annum. If its present value is Rs. 8100, what will be its worth after 2 years ? What was the value of the machine 2 years ago ?
Soln.
Value of the machine a…