Ques 1 Speed and Time
A train 180 m long moving at the speed of 20 m/sec overtakes a man moving at a speed of 10 m/sec in the same direction. The train passes the man in
Let's call the time it takes for the train to overtake the man "t".
During this time, the man covers a distance of 10 * t meters, and the train covers a distance of 20 * t + 180 meters.
The train must cover a distance equal to the length of the train plus the distance covered by the man, so we have:
20 * t + 180 = 10 * t + 180
Solving for t, we get:
10 * t = 180
t = 18 seconds
So, the train passes the man in 18 seconds, and the correct answer is b) 18 sec.
Ques 2 Speed and Time
A man covers half of his journey at 6 km/hr and the remaining half at 3 km/hr. His average speed is
Ques 3 Speed and Time
A Jackal takes 4 leaps for every 5 leaps of goat but 3 leaps of a Jackal are equal to 4 leaps of the goat. compare their speeds
Ques 4 Speed and Time
Running at 5/6 of its usual speed, a train is 10 minutes too late. Find its usual time to cover the journey.
Ques 5 Speed and Time
If A and B can do a piece of work in 24 days, B and C can do it in 40 days, while A and C can do it 30 days. In how many days can A alone do it?
Ques 6 Speed and Time
The incomes of A and B are in the ratio 8:5, and their expenditures are in the ratio 13:7. If each saves Rs.3000 what is the expenditure of B?