Question

The cost price 21 ice creams is equal to the selling price of 18 ice creams.find tge gain or loss percent

Answer 1

Answer:

14.286%

Step-by-step explanation:

Lets do it in the simplest way possible

First we should all know that formula for loss percentage = (C.P. - S. P)/ C.P. multiply by 100

So as per the question : 21 S.P. = 18 C.P.  

This implies that 1 S.P. = 18 C.P. / 21

Put this in formula  

Loss % = { C.P. - 18 C.P/21} / C.P. * 100

= { 21 C.P. - 18 C.P } / 21 / C.P. * 100

= { 3 C.P / 21 C.P } * 100

= 1/7 * 100

= 14.286%