Question

We have a 630 ml mixture of milk and espresso in the ratio 7:2. How much espresso must be added to make the ratio 7:3?

Answer 1

Answer:

70 ml

Explanation:

Let the common ratio be x

A.T.P.

7x+2x = 630ml

9x = 630ml

x. = 630ml/9

x. = 70ml

therefore , 7x = 490 ml

2x = 140 ml

3x = 210 ml

since , 210 ml - 140 ml = 70 ml

70 ml should be added to expresso

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Answer 2

Answer:

70 ml is the answer........ ....