Question

- 17. 30 কণীৰ কিনাদাম, 20 টা কণীৰ বেচাদামৰ সমান। লাভৰ শতকৰা হাৰ কি ?
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Answer 1

Given:

The cost price of 30 eggs is equal to the sale price of 20 eggs.

To find:

What is the percentage of profit?

Solution:

Let Rs. "x" represents the cost of one egg.

So,

The C.P. of 30 eggs =  Rs. 30x

The C.P. of 20 eggs = Rs. 20x

It is given that,

S.P. of 20 eggs = C.P. of 30 eggs = Rs. 30x

Since the C.P. of 20 eggs is less than the S.P. of 20 eggs, so there is a profit earned in the whole transaction.

∴ The profit percentage is,

= $\frac{S.P. - C.P. }{C.P.} \times 100$

= $\frac{30x - 20x }{20x} \times 100$

= $\frac{10x }{20x} \times 100$

= $\frac{1 }{2} \times 100$

= $\bold{50\%}$

Thus, the profit percentage is 50%.

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Answer 2

Answer:

30 কণীৰ কিনাদাম,20 টা কণীৰ বেচাদামৰ সমান লাভৰ শতকৰা হাৰ কি ?