maths

(16) Successive discounts of  30% and 50% is equivalent to a single discount of  how many per cent ?

Soln. Let  M. P.  =  Rs.   100

…

(11) If the selling price of  16 articles is the same as the cost price of  12 articles, find loss percent.

Soln. More sell   =   4  pencil. Instead of  selling  =  12  pencils

( for break–even point )

Instead of  selling   …

(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…