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Let the speed of the faster train = x kmph ∴ Relative speed of the trains = (x - 54) kmph ⇒ (x - 54)× (5/18) m/sec. Distance = 160 + 140 = 300 m and time = 12 sec ∴ (x - 54)(5/18) = 300/12 ⇒ x- 54 = (300× 18)/(5× 12) = 90 ∴ x = 90 + 54 = 144 kmph.
Train A crosses another train B running in the opposite direction in 180 seconds. What is the speed of the train A?
Statement I - Speed o...
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What is the cost of fencing a rectangular plot?
I. The length of the plot is thrice its breadth.
II. The cost of fencing is Rs. 16 per met...
What is the value of a two digit number?
Statement I: The sum of the digits of the number is 9.
Statement II: The digit at the tens...
Rohit, Dhawan, Virat, Dhoni and Mayank are five friends. Their mean age is 28. What is the age of Virat?
Statement I : Rohit’s age is 28
Find the Income of Suleiman?
Statement I: Suleiman's income exceeds Salman's by Rs. 8000, and Salman's savings amount to Rs. 15,000.
State...
What is the speed of boat A in still water?
Statement I: Boat A takes 4 hours to travel 48 km downstream, while the speed of the current is 3 km/...
What is marked price of the product?
Statement I – After giving the 10% discount on mark price the shopkeeper make a profit of Rs. 45 by sell...
What is the time taken by train to go from Station A to Station B?
Statement I: If the train increases its speed by 20%, then it reaches 40 m...
