Two vessels A and B contains milk and water mixed in the ratio 8:5 and...
Given:
- The ratio of milk to water in vessel A is 8:5.
- The ratio of milk to water in vessel B is 5:2.
To Find:
- The ratio in which the two mixtures should be mixed to obtain a new mixture containing 900/13% milk.
Solution:
Let's assume that we mix x units of mixture A with y units of mixture B to obtain the new mixture.
Finding the Ratio of Milk to Water in the New Mixture:
- In mixture A, the ratio of milk to water is 8:5. This means that out of every 8+5=13 units of the mixture, 8 units are milk and 5 units are water.
- In mixture B, the ratio of milk to water is 5:2. This means that out of every 5+2=7 units of the mixture, 5 units are milk and 2 units are water.
- In the new mixture, the percentage of milk is given as 900/13%. This means that out of every 900/13 units of the mixture, 900 units are milk and 13 units are the total mixture (milk + water).
Now, we can set up the following equation to find the ratio of milk to water in the new mixture:
(8x + 5y) / (5x + 2y) = (900/13) / 1
Simplifying the Equation:
- Cross-multiplying the equation, we get:
(8x + 5y) * 1 = (5x + 2y) * (900/13)
- Expanding the equation, we get:
8x + 5y = (4500x + 1800y) / 13
- Multiplying both sides of the equation by 13, we get:
104x + 65y = 4500x + 1800y
- Simplifying the equation, we get:
4500x - 104x = 65y - 1800y
4396x = -1735y
Finding the Ratio:
To find the ratio of x to y, we can divide both sides of the equation by y:
(4396x / y) = -1735
Since the ratio of x to y is the same as the ratio of 4396 to -1735, we can simplify it by dividing both numbers by their greatest common divisor (GCD), which is 1.
Therefore, the ratio of x to y is 4396: -1735, which can be simplified to 2:7.
Conclusion:
The ratio in which mixtures A and B should be mixed to obtain a new mixture containing 900/13% milk is 2:7, which corresponds to option D.