Question

B ASSIGNMENT
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1. The cost price of 30 articles is the same as the selling price of x articles. If the profit is 25%, then find the value
of x.
collina 450 cassettes a man had a pain equal to the S.P. of 45 cassettes. Find gain%.​

Answer 1

Answer:

24

Step-by-step explanation:

profit = 24%

means....

if CP of 1 article : 100

then SP of 1 article : 100 +25 = 125

now...

CP of 30 articles : 100 × 30 = 3000

SP of x articles : 125 x

but....

SP = CP

125 x = 3000

x = 3000/125

x = 24

Answer 2

Answer:

The gain % x is 24.

Step-by-step explanation:

Given:

The cost price of 30 articles exists identical to the selling price of x articles.

Profit = 25 %

To find:

the gain%.​

Step 1

From the equation,

Profit = SP - CP

Profit % = (Profit/ CP) $\times$ 100

Let, CP of the each article be Rs. 1

CP of x article = Rs. x

SP of each article = Rs. 30

From the above equation, we get

Profit = SP - CP

Profit = 30 - x

Step 2

Now,

Profit $\%=[(30-x) / x \times 100]=25$

3000 - 100 x = 25 x

Simplifying the above equation, we get

3000 = 25 x + 100 x

3000 = 125 x

x = (3000 / 125)

x = 24

The gain % x exists 24.

Therefore, the value of the x exists 24.

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