Question

The cost price if 25 notebooks is equal to selling price of 20 notebooks find the profit or loss percentage

Answer 1

Let the cost price of each notebooks be 1.
CP of 25 notebook = 25.
and, CP of 20 notebook = 20
Now,
As per the question,
SP of 20 notebook = 25.
So, Profit = SP-CP = 25-20 = 5.
Profit percentage = 5/20 * 100 = 25 .

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Answer 2

Answer:

25% profit

Step-by-step explanation:

first we will write formula of profit and loss

Formulas ;

Profit :

1. Profit = SP-CP

[ SP = selling price ]

[ CP = cost price ]

2. Profit % = profit /CP×100

or, ( SP-CP/CP)×100

Loss:

1. Loss = CP - SP

[ CP = cost price ]

[SP = selling price]

2. Loss % = loss/CP ×100

or, CP-SP/CP ×100

Now

Let the cost price of each notebook be 1 .

CP of 25 notebooks = 25

CP if 20 notebooks be = 20

SP of 20 notebooks =25

so, here we will use formula of profit

So, 25-20 = 5

Profit percentage = 5/20×100 =25

You will be thinking how 25 came as it is 5/20×100 so we will cut 20's 0 from 100's 0 so it will became 5/2×10 and then we will cut 2 by 10 then it will became 5×5 so answer will come 25

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