Question
In container P, there is 60 litres of milk and in
container Q there is 40 litres of water. 40% of milk and 50% of water is taken out from the respective containers and are mixed in container R. How much water should be added to container R such that the ratio of milk to water becomes 3:5? MTSolution
Quantity of milk in container R = 0.40 × 60 = 24 litres Quantity of water in container R = 0.50 × 40 = 20 litres Let x litres of water is added to the container R. According to the question, 24/(20 + x) = 3/5 Or, 120 = 60 + 3x Or, 3x = 60 Or, x = 20 Therefore, water added to container R = 20 litres
230 192 172 ? 122 100
...What value should come in the place of (?) in the following number series?
64, 80, 104, ?, 176, 224
97, 106, ?, 195, 411, 460
What will come in place of the question mark (?) in the following series?
29, 42, ?, 95, 135, 184
Find the missing term:
2, 6, 15, 31, 56, ?
32   48   96   ?   720   2520
82, 98, 130, 178, 242, ?
4 10 ? 62.5 156.25 390.625
...140, 146, 170, 224, ?, 470
7 47 ? 223 359 527
...