Question
Train ‘A’ running with a speed of 54 km/hr can cross
a standing goods train of 4 times its length in 30 seconds. Find the time taken by 210 metres long train ‘B’ which is coming from opposite direction of train ‘A’, with a speed of 35 m/s, to cross train ‘A’.Solution
Let the length of train ‘A’ be ‘x’ metres Therefore, length of the goods train = ‘4x’ metres Speed of train ‘A’ = 54 × (5/18) = 15 m/s According to the question, 4x + x = 15 × 30 => 5x = 450 => x = 90 Therefore, time taken by train ‘B’ to cross train ‘A’ = {(90 + 210)/(15 + 35)} = 6 seconds
More Trains Questions
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(13)2 - 3127 ÷ 59 = ? x 4
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...(53 + 480 ÷ 4)% of 20 = ?% of 70
Find the simplified value of the following expression:
62 + 122 × 5 - {272 + 162 - 422}
(15 × 225) ÷ (45 × 5) + 480 = ? + 25% of 1240
√ [? x 11 + (√ 1296)] = 16
11 × 25 + 12 × 15 + 14 × 20 + 15 = ?
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