Question
A container has 60 liters of a mixture of milk and water
in the ratio of 3:2. How many liters of water should be added to make the ratio 2:3?Solution
Milk = (3/5) × 60 = 36 liters Water = (2/5) × 60 = 24 liters Let x liters of water be added. After adding, new water quantity = 24 + x New ratio = 36 : (24 + x) = 2:3 (36 / (24 + x)) = (2 / 3) Cross-multiply: 108 = 48 + 2x 2x = 60 x = 30 liters Answer: a) 30 liters
6   55   91   116   132    ?  . Â
98    219    75    244    ?    273
Select the option in which the numbers are related in the same way as are the numbers of the following set.
(25, 18, 225)
26 63 124 215 342 511 ?
...8 9 30 155 ? 9837 108218
...3,   2,   3,  8,  31,  ?
3 12 48 192 768 ?
104Â Â Â Â Â Â 156Â Â Â Â Â Â Â 234Â Â Â Â Â Â Â ? Â Â Â Â Â Â Â 526.5Â Â Â Â Â Â Â 789.75
...18, 32, 50, 82, 132, ?
5Â Â Â Â 10Â Â Â Â Â 30Â Â Â Â Â 150Â Â Â Â Â 950Â Â Â Â Â 11550
...
