Question

Find the profit or loss per cent, if
(i) C.P. = 30; S.P. = 42

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Answer 1

Answer:

If CP = ₹30, SP= ₹42 then % profit =40%

Step-by-step explanation:

Given C.P. =  ₹30

S.P. =  ₹42

Profit = SP - CP  

= 42 - 30

Profit =  ₹12

% profit

$= \frac{Profit}{CP} \ times 100\\= \frac{12}{30} \ times 100\\=\frac{1200}{30}$

% profit =40%

Answer 2

Here the cost price and selling price is given

Cost price = 30

selling price = 42

We have to find the profit or loss percentage

now, as the selling price is greater than the cost price

Therefore, there will be a profit

profit = selling price - cost price

        = 42 - 30

       = 12

Profit percent = ( profit/cost price ) × 100

                      = ( 12/30) × 100

                     = 120/3

                    = 40

Hence, the profit percent is 40%