Question
Train P starts from Lucknow to Dehradun at 11:55 am with
an average speed of 16.5 m/s. Train Q starts from Dehradun to Lucknow at 1:35 pm with an average speed of 11.5 m/s. At what time the two trains will meet each other if the distance between Lucknow and Dehradun is 555 Km.Solution
Speed of train P = 16.5 × 18/5 = 59.4 Km/h Speed of train Q = 11.5 × 18/5 = 41.4 Km/h Distance travelled by train P till 1:35 pm = 59.4 × 5/3 = 99 Km Relative speed of trains = 59.4 + 41.4 = 100.8 Km/h Remaining distance to be travelled after 1:35 pm = 555 – 99 = 456 Km Time taken to cover 456 Km = 456/100.8 = 9/2 = 4 hours 30 minutes So the two trains will meet each other at 1:35 + 4:30 = 6:05 pm
(16% of 550 – 22% of 700 + 45% of 800) = ?
What will come in the place of question mark (?) in the given expression?
? ÷ (33 - 12 X 2) = (24 + 50 - 38) ÷ ?Â
68% of 450 – 1008 ÷ 14 + 516 ÷ 43 =?
245 + (45 ÷ 3 + 5) × 6 - 125 = ?
382 + 482 + 572 = ? - (81 x 49)
What will come in the place of question mark (?) in the given expression?
√(? - 212) - 84 = 81 - 13 X 9
Simplify the following expression:
84 - [21 - {14 - (25 - 16 + 8) }] ÷ 3 X 6
28(4/5) + 52(1/2) × 8(2/7) - 11(1/5) = ? + 6(1/5)
612 + 1250 - 728 = ? × 63
- What will come in place of (?), in the given expression.
(4² + 6²) × 2 = ?
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