. 729ml of mixture contains milk and water in the ratio 7:2 how much more wate is to be added to get a new mixture containing milk and water in the ratio 7:3?
Choose the correct choice:
A) 22 B) 77 C) 36 D) 28 E) 81
Difficulty Level : Easy Moderately easy Difficult Basic Formula: Facts and ratios a: b = a/b   Answer with Explanation: Ratio of milk and water in 729 ml = 7:2 Step (i) Milk in 729 ml of mixture = (7/9 x 729 ) ml = 567 ml  water in 729 ml of mixture = 729 – 567 = 162 ml Step (ii) Let x be the quantity of water added to new mixture, with the ratio 7:3  Quantity of water in the new mixture = (162 + x ) ml   Then 7/3 =   x162 567  7 (162 + x) = 3 x 567  1134 + 7x = 1701 7x = 1701 – 1134 X = 567/7= 
<gadget id="calculator">567/7</gadget>
<output>81</output>
81 ml  Quantity of water added to new mixture= 81 ml.   Answer:81
<result>E</result>
. 729ml of mixture contains milk and water in the ratio 7:2 how much more wate is to be added to get a new mixture containing milk and water in the ratio 7:3?