A 35-liter mixture contains milk and water in a 3 : 4 ratio. How much milk should be added to the mixture to make the ratio equal?

A

3 liters

B

5 liters

C

7 liters

D

8 liters

উত্তরের বিবরণ

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  1. Initial ratio: Milk : Water = 3 : 4
    Total mixture = 35 liters → Total parts = 3 + 4 = 7

  2. Quantities in mixture:

    • Milk = 35×37=1535 × \frac{3}{7} = 15 liters

    • Water = 35×47=2035 × \frac{4}{7} = 20 liters

  3. Let x = milk to be added
    New ratio Milk : Water = 1 : 1 → 15+x20=1\frac{15 + x}{20} = 1

  4. Solve for x:
    15+x=20    x=515 + x = 20 \implies x = 5

Answer: 5 liters of milk should be added.

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Updated: 1 month ago

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যদি x - y = 4 এবং xy = 5 হয়, তবে x3 - y3 + 8(x + y)2 এর মান কত?

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A jar contains a mixture of oil and water in the ratio 7 : 5. If 9 liters of the mixture is removed and replaced with the same amount of water, the new ratio becomes 7 : 9 . What was the initial quantity of oil in the jar?

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A

10  liters

B

20 liters

C

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D

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