Question

a mixture of 70 litres of milk and water contains 10% of water how much water must be added to make water 25 by 2%​

Answer 1

Answer:

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Step-by-step explanation:

Volume of milk in 70 Litres of milk-water mixture which contains 10% water= 70 x 90/100= 63- litres.

To decrease the % of milk to 87.5% , volume of water to be added, V, can be calculated as

= 70 x 0.9= (70 + V) x 0.875

63= 61.25 + 0.875 x V.

So V= 2.75/0.875=( 11/4) x( 7/8)

= 22/7= 3.1428 Litres.

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Answer 2

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A mixture of 70 litres of milk and water contains 10 % of water how much water must be added to make water 25 / 2 % ?

==> Volume of milk in 70 Litres of milk - water mixture which contains 10 % water

==> = 70 x 90 / 100

==> = 63 - litres . 63 = 61 . 25 + 0 . 875 x V . = 22 / 7 = 3 .

==>1428 Litres .