Question
A train 450 metre long takes 60 sec to cross a man
running at a speed of 7 km/hr in the direction opposite to that of train. What is the speed of the train?Solution
Let the speed of the train be x Relative speed = (x + 7) km/hr ⇒ (x + 7) = (450 × 18)/(60 × 5) ⇒ (x + 7) = (8100)/(300) ⇒ x + 7 = 27 ⇒ x = 27 – 7 = 20 km/hr
More Trains Questions
√323.89 × (3.20) ÷ 9.02 =?
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
23.98% of 624.99 = 19.98% of ? + 14.98% of 639.99
Direction: Please solve the following expression and choose the closest option
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
12, 16, ?, 36, 52, 72
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
(6859.01)1/3 × 10.11 × 14.47 ÷ 20.32 = ? + 45.022
33.33% of 809.891 + 66.66% of 212.91 = ?
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