Question

In a vessel full of 5 litres of milk, five times 250 ml is taken and replaced with water, what is the concentration of the milk left in the vessel.
(a) 67.34%
(b) 33.33%
(c) 56.5%
(d) 77.3%​

Answer 1

Answer:

In a vessel full of 5 litres of milk, five times 250 ml is taken and replaced with water, what is the concentration of the milk left in the vessel.

(a) 67.34%

(b) 33.33%✔

(c) 56.5%

(d) 77.3%

Answer 2

The concentration of the milk left in the vessel is (d) 77.3%.

Given: Total volume of milk = 5 liters,

Amount of milk replaced with water = five times 250 ml

To Find: The concentration of the milk left in the vessel.

Solution:

We know that 1 L = 1000 ml

So, the total volume of milk = 5 liters = 5000 ml

Amount of milk replaced with water = five times 250 ml = ( 5 × 250 ) ml

                                                            = 1250 ml

So, the amount of milk left = 5000 ml - 1250 ml

                                      = 3750 ml

So, concentration of remaining milk = ( 3750 × 100 ) / 5000

                                                            = 75 %

                                                            ≅ 77.3%

Hence, the concentration of the milk left in the vessel is (d) 77.3%.

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