Time - practice problems - page 3 of 171
Number of problems found: 3410
- The boat
A boatman rows 2 km against the current in 40 minutes and returns to the same spot in 30 minutes. What is his rowing speed in still water? - A plane 3
A plane left 30 minutes later than the scheduled time. In order to reach the destination 1,500 km away on time, it had to increase its speed by 250 km/h from its usual speed. Find its usual speed. - Two trains 16
Two trains cross each other in 14 seconds when moving in opposite directions, and in 3 minutes and 2 seconds when moving in the same direction. By what percentage is the speed of the faster train greater than that of the slower train? - Usual speed 2 A passenger train takes 1 hour less for a journey of 120 km if its speed is increased by 10 km/h from its usual speed. What is its usual speed?
- A turtle 3
A turtle walks at about ¼ metre per hour. How long will it take the turtle to cover 120 metres? - A ration
108 kg of rations are sufficient for 18 students for 15 days. For how many students will 70 kg of rations be sufficient for 25 days? - A chord 2
A chord of length 16 cm is drawn in a circle of radius 10 cm. Calculate the distance of the chord from the centre of the circle. - Two trains 15
A train travelling at 50 km/h leaves Delhi at 8 AM and another train travelling at 70 km/h leaves Delhi at 11 AM in the same direction. How many km from Delhi will they be when the faster train catches the slower one? - Five men
5 men or 9 women can complete a piece of work in 19 days. In how many days will 3 men and 6 women complete it? - A long train A train passes a standing man in 6 seconds and a 210 m long platform in 16 seconds. Find the length and the speed of the train.
- Avg velocity
A car travels 120 km at 60 km/h and another 120 km at 40 km/h. What is its average speed for the entire journey? - Crossing a pole A train 200 m long is moving at a speed of 72 km/h. How long will it take to pass a stationary pole?
- Three people
Three people: Peter, Quinton, and Roland. 5 years ago, the average age of P and Q was 15 years. The current average age of P, Q, and R is 20 years. Find the age of R in 10 years. - Common work 39 men can repair a road in 12 days working 5 hours a day. How many days will be required to complete the same work with 30 men working 6 hours a day?
- Worker 25 Worker A can complete 2/3 of a certain job in 12 days, and worker B can complete 1/6 of the same job in 4 days. In how many days will they complete the job if they work together?
- 5 years 5 years ago, a father's age was three times the age of his son. In 5 years' time, the father's age will be twice the age of his son. Find their current ages.
- The rates The rates of working of A and B are in the ratio 3 : 4. What is the ratio of the number of days taken by them to finish the work?
- Three quarters of a hour
Calculate the value of 3/4 of 40 hours. - Four legs of journey
A car driver covers a distance between two cities at a speed of 60 kmph and on the return, his speed is 40 kmph. He goes again from the first to the second city at twice the original speed and returns at half the original return speed. Find his average sp - Work in factory 45 men can complete a work in 16 days, but after some days they started working 30 more men joined them and completed the remaining work in 6 days. How many days after the commencement of the job did 30 men join?
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