Question

दूध और पानी के 40 लीटर मिश्रण मे 10% पानी है इसमें कितना पानी मिलाया जाए जिसमें कि मिश्रण मे पानी की मा‌‌त्रा20% हो जाए

Answer 1

If u added more 5 litre of water then the. Percentage of mixture of water in the milk will 20℅.
It will help you dear....

Answer 2

Answer:

5 l is added to mixture to make water percentage 20 in mixture.

Step-by-step explanation:

Given:

Quantity of mixture = 40 l

Percentage of water in mixture = 10 %

To find: Quantity of  water to be added to mixture so that percentage of water become 20 %.

Quantity of water in mixture = 10/100 × 40 = 4 l

Quantity of other item = 40 - 4 = 36 l

let x be the amount of water to be added.

According to the question,

$20=\frac{4+x}{40+x}\times100$

$\frac{20}{100}=\frac{4+x}{40+x}$

40 + x = 5( 4 + x )

40 + x = 20 + 5x

4x = 20

x = 5

Therefore, 5 l is added to mixture to make water percentage 20 in mixture.