Answer :

Given that, the ratio of milk and water is 5:2.

∴ Ratio between mixture and milk = 5 + 2 : 5 = 7 : 5

Now, let the quantity of mixture be ‘x’ and milk be ‘y’.

⇒ 7y = 5x is the equation.

For graph, we’ll first make the table of solutions by putting some random values of x and thereafter we’ll find corresponding values of y and then we’ll plot these points on graph, join them and extend them in straight line to find the graph.

(Note: ∵ equation is linear graph will always be straight line.)

Table of solutions for the given equation-

GRAPH:

Now, given mixture(x) = 28

From the graph, (pt. E)- the corresponding quantity of milk(y) = 20

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