Question

the cost price of 25 notebooks is equal to selling price of 20 notebooks . find the profit or loss of percentage.
explain full​

Answer 1

Answer:

25

Step-by-step explanation:

SP of 20 notebook = 25. So, Profit = SP-CP = 25-20 = 5. Profit percentage = 5/20 * 100 = 25 .

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Answer 2

Given:

Cost Price (C.P.) of 25 notebooks = Selling Price (S.P.) of 20 notebooks

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To find:

The profit or loss %.

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Solution:

Let C.P. of 1 notebook be ₹1.

So,

C.P. of 25 notebooks = ₹(1×25)

                                    = ₹25

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S.P. of 20 notebooks = ₹25  

$\bigstar {\sf {\orange {Why?\ Because\ we\ are\ given\ that\ C.P.\ of\ 25\ notebooks= S.P.\ of\ 20\ notebooks.}}}$ $\sf \orange {We\ know\ the\ C.P.\ of\ 25\ notebooks\ is\ Rs. 25,\ so\ S.P.\ of\ 20\ notebooks\ will\ also\ be\ Rs. 25}$

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Now,

S.P. of 1 notebook = ₹ $\dfrac{25}{20}$

= ₹ $\dfrac{5}{4}$

So,

S.P. of 25 notebooks = $\dfrac{5}{4}\times 25$

= ₹31.25

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₹31.25 > ₹25

S.P. > C.P.

As, S.P. is greater than C.P., therefore it is a profit.

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We know that,

Profit = S.P. - C.P.

Profit = ₹(31.25 - 25)

$\boxed {\bf {\red {Profit = Rs. 6.25}}}$

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Now,

Profit% = $\sf \dfrac{Profit}{C.P.}$ × 100%

Profit% = $\dfrac{6.25}{25} \times 100\%$

Profit% = 0.25 × 100%

$\boxed {\bf {\green {Profit\% = 25\%}}}$

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Final answer:

The profit% is of 25%.