Question

Ir the selling price of 50 balls is equal to the cost price of 30 balls. Find the profit or loss in per cent.​

Answer 1

$\sf{\huge{\underline{\red{Given :-}}}}$

The selling price of 50 balls is equal to the cost price of 30 balls.

$\sf{\huge{\underline{\green{To\:Find :-}}}}$

• The profit or loss in per cent.

$\sf{\huge{\underline{\purple{Solution :-}}}}$

Let CP of one ball be ₹1

So, The CP of 30 balls = ₹30 .

➝ For, 50 balls ₹50

{ The CP for the 30 balls is SP of 30 balls }

The SP of 50 balls will be ₹30.

Our CP is more, So , the loss will be ,

➝ Loss = CP - SP

➝ Loss = 50 - 30

➝ Loss = ₹20

Loss Percentage = $\dfrac{Loss}{CP}$ x 100

➝ $\dfrac{20}{50}$ x 100

➝ 20 × 2

➝ 40%

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Answer 2

$\huge\mathfrak\color{red}{Answer}$

Let S.P of 50 Balls be Rs.100

S.P of 1 Ball=Rs.100/50=>Rs.2

Then C.P of 30 Balls = Rs.100

C.P of 1 Ball= 100/30=>Rs.3.3

_________________________

To find:-

Profit or loss

__________________________

$C.p>S.p$

$\boxed{\underline{\purple{\tt{\:result=Loss}}}}$

$:=>L=S.P-C.P$

$:=>L=3.3-2.0$

$:=>L=1.3$

______________________________

L%=L/C.P×100

L%=1.3/100×100%

L=1.3%

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