Question
Train P starts from Lucknow to Dehradun at 11:55 am with
an average speed of 25 m/s. Train Q starts from Dehradun to Lucknow at 1:35 pm with an average speed of 20 m/s. At what time the two trains will meet each other if the distance between Lucknow and Dehradun is 595 Km.Solution
Speed of train P = 25 × 18/5 = 90 Km/h Speed of train Q = 20 × 18/5 = 72 Km/h Distance travelled by train P till 1:35 pm = 90 × 5/3 = 150 Km Relative speed of trains = 90 + 72 = 162 Km/h Remaining distance to be travelled after 1:35 pm = 595 – 150 = 445 Km Time taken to cover 445 Km = 445/162 = 11/4 = 2 hours 15 minutes So the two trains will meet each other at 1:35 + 2:15 = 3:50 pm
-1, 5, 23, 59, ?
252, 128, 66, 35, 19.5, ?
If series II follows the same sequence pattern as series I shown below, determine the value of 'p'.
Series I: 3, 4, 9, 34, 159, 784
Se...
64, 66, 69, 74, 81, ?
12, 19, 33, ?, 117
76, 80, 89, 105, ?, 166
45Â Â Â Â 45.5Â Â Â Â Â Â 47 Â Â Â Â Â Â 49.5Â Â Â Â Â Â 53 Â Â Â Â Â Â ?
...96, 144, ?, 324, 486, 729, 1093.5
257, 399, 566, ?, 983, 1237Â
- What will come in place of the question mark (?) in the following series?
6, 24, 60, ?, 210, 336
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