Question

The cost of 21 article is equal to s.p of 18 articles find gain or loss percent

Answer 1

CP of 21 articles = SP of 18 articles

Let CP of 1 article be Rs. 1

     CP of 18 articles be Rs. 18

     CP of 21 articles be Rs. 21

     SP of 18 articles be Rs. 21

Since, SP is more, it’s a gain.

Gain = 21 - 18 = 3

Gain% = 3/18 X 100

= 16.666% or 16 2/3 %

Answer 2

Answer:

Step-by-step explanation:

Let  C.P  of  each  article  be  Re.  1.

   Then  C.P  of  18  articles  =   Rs.  18,  

   S.P  of  18  articles  =   Rs.  21.

   Gain %  =  ( 3/18 * 100 ) %  =  16 2/3

so,

Answer-6 2/3%