Question
In a mixture of 45 litres, the ratio of wine to water is
2 : 3. If this ratio is to be 1 : 3, then what is the quantity of water needed to be added?Solution
Quantity of wine in the mixture = 45 × 2/5 = 18 litres Quantity of water in the mixture = 45 × 3/5 = 27 litres Let x liters water be added to the mixture then, 18/(27+ x) = 1/3 54 = 27 + x x = 54 - 27 = 27 litres
Find the missing number, in the given number series.
42, 52, 72, 112, 192, ?
161Â Â Â Â 173Â Â Â Â Â Â 191 Â Â Â Â Â Â 215Â Â Â Â Â Â 245 Â Â Â Â Â Â ?
...Find the next term in the series:
4, 9, 19, 39, 79, ?
Find the missing number in the given number series.
 58, 86, 142, ?, 478, 926
120, 120, ?, 360, 900, 2700
Find the missing term:
2, 6, 15, 31, 56, ?
1, 7, 25, 61, ?
79Â Â Â Â Â 86Â Â Â Â Â Â 76 Â Â Â Â Â Â 89Â Â Â Â Â Â 73 Â Â Â Â Â Â ?
...What will come in place of the question mark (?) in the following series?
22, 25, 30, 37, 48, ?
What will come in place of the question mark (?) in the following series?
36, 85, ?, 230, 330, 451
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