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
What value should come in the place of (?) in the following number series?
178, ?, 692, 861, 982, 106331Â Â Â 40Â Â Â 51Â Â Â 64Â Â Â 79Â Â Â Â ?
What will come in place of the question mark (?) in the following series?
92, 153, 220, ?, 364, 443
32, 48, 72, 108, ?, 243
10, 10, 15, 30, 75, ?
17, 36, 65, 104, 153, ?
12, 16, ?, 48, 76, 112
114, 146, 210, 306, 434, ?
What will come in place of (?) Question mark in the given number series.
10, 15, 30, 75, 225, 787.5, ?
5, 18, 39, ?, 105, 150