Question
A 160 m long train crosses another 290 m long train
running in the opposite direction in 10 seconds. If the shorter train crosses a pole in 9 seconds, what is the speed of longer train?Solution
Speed of the shorter train = 160/8 = 20 m/sec Let the speed of the longer train be x km/hr According to the question, ⇒ (20 + x) = (160 + 290)/10 ⇒ 20 + x = 450/10 ⇒ x = 45 – 20 = 25 ⇒ x = 25 x 18/5 = 90 km/hr.
‘A’ and ‘B’ started moving towards each other at same time with a speed of 25 km/hr and 15 km/hr, respectively. If the distance covered by ‘A�...
A Scooty is currently traveling at a speed of (2a – 90) km/hr, and a Bus is moving at a speed of (b + 30) km/hr. If the Scooty's speed were equal to t...
A car travels a distance of 810 meters in 36 seconds. If the speed of the car is reduced by 4.5 meters per second, how much time (in seconds) will it ta...
A man walks 4 km at a speed of 2 kmph, runs 6 km at a speed of 2 kmph and goes by bus another 32 km. Speed of the bus is 8 kmph. Find the average speed ...
A bike departs from point X at 9:00 AM toward point Y, traveling at a speed of 45 km/h. Two hours later, a car starts from point X toward point Y at a s...
A 725 m long train passes a tunnel 235 m long in 48 seconds. Find the speed of the train.
A person walks at a speed of 'y' km/hr. After 1 hour, they increase their speed to (y + 10) and walk for another 4 hours. If the ratio of the distance c...
A train moving at 3/5th of its normal speed reaches its destination 10 hours late. Find the normal time taken by it.
A boat goes downstream for 44 km and immediately return. It took the boat twice as long as to make the return trip. If the speed of river flow were twic...
A is cycling at an average speed of 11 km/hr such that he can reach a certain point at 12 noon. If he cycles at 22 km/hr, then he will reach the destina...