Question

If the cost price of 15 pens is equal to the selling price of 20pens ,find the gain or loss percent.​

Answer 1

Answer:

This is the answer

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Answer 2

Answer:-

• Loss % = 25 %

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• Given:-

Cost Price [C.P] of 15 pens = Selling Price [S.P] of 20 pens.

• To Find:-

Gain or loss percent [%] = $\bf{?}$

• Solution:-

Let the Cost Price of 1 pen =$\bf{Rs. x}$

Cost Price of 20 pens =$\bf{Rs. 20x}$

Selling Price of 20 pens = Cost Price of 15 pens

S.P of 20 pens = 15x

Here, Cost Price of 15 pens is equal to the Selling Price of 20 pens.

Therefore,

It is a loss.

We know,

$\boxed{Loss = C.P - S.P}$

→ Loss = $20x - 15x$

→ Loss = $5 x$

Also,

$\boxed{Loss \% = \dfrac{Loss}{C.P} \times 100}$

→ Loss % = $\dfrac{5x}{20x}\times 100$

→ Loss % = $\dfrac{1}{4}\times 100$

$\implies\bf{25 \%}$

$\therefore$ It is a loss and the Loss % is $\bf{25 \%}$

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• Some Formulas Related to Profit and Loss:-

→ Gain % = (Gain / CP) * 100

→ Loss % = (Loss / CP) * 100

→ SP = [(100 + Gain%) / 100] * CP

→ SP = [(100 – Loss %) / 100]*CP

→ CP = [100 / (100 + Gain%)] * SP

→ CP = [100 / (100 – Loss%)] * SP

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