(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             More sell

16                        4

100                 ( ? )

=

=   25  %  (Loss)

(12) By selling  50 oranges for a rupee, a man loses  25 %. How many for a rupee should he sell to gain 25 %  ?

Soln.  Old  S.P.               New S.P.

75          125

          ( ? )

= 

  30 oranges for a rupee should he sell to gain 25 % .

If   D ,  D   are discounts  and  and   are extra charges ( in percentage like tax etc. ),  then

■     S. P.    =     M. P.

■     Discount     =      M. P.   (  If   only  discount  D   is  given on  M. P. )

(13) If the marked price of  an article is Rs. 500 and a discount of  15 %  is given on it, what is the selling price ?

Soln. S.P.  =  85  % of  Rs. 500  =  Rs.   =  Rs. 425.

(14) If 10 %  is allowed as discount on a T.V.  and its selling price is Rs.  360, what is its marked price ?

Soln. S. P.    =  M. P.

360   =     M. P.                M. P.    =    Rs.  400

P. and S. P. is always reckoned on C. P.

(15) A  dealer marks his goods 30 % above his cost price and allows a discount of  20 % on it. Find his gain per cent.

Let,   C. P.  =   100   Rs.

S.P. =    C. P.  =    100  =  104  Rs.

Gain   =    S. P.  –  C. P.  =  104 – 100  =  Rs.  4           Gain  ( % )  =   4  %.

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