# Worksheet on Calculating Time | Elapsed Time Worksheets with Answers

Students need to plan how long it will take them to finish Calculating Time Problems. It is really necessary to learn math problem-solving skills to save time in the exam. If students know the exact process to solve Time Calculation in the exam, then they can use the time properly. Therefore, learn the easy way to solve problems by referring to the Time and Distance Worksheets. Check the Worksheet on Calculating Time provided here to know the different methods to solve Time Calculation Problems.

If you are seeking the Time Worksheets with Solutions, then you are at the correct place. Immediately start your practice by getting the Calculating Time Practice Worksheets PDF.

1. A car travel 50 km in 10 minutes. In how much time will it cover 20 km?

Solution:

Given that a car travels 50 km in 10 minutes.
Find the speed of the car.
Therefore, the distance = 50 km, the time = 10 minutes,
10 minutes = 10/60 hours = 1/6 hrs
We know that Speed = distance/time
Substitute the given value in the formula.
The speed = 50 km/ (1/6) hr
Speed = 50 × 6 km/hr
Speed = 300 km/hr
Now, you know the speed of the car.
If the car covers 20 km, then the time = distance/speed
Time = 20 km/300 km/hr
Time = 1/5 hr
Since 1 hour = 60 minutes
The time = (1/5) × 60 minutes = 12 minutes.

The car takes 12 minutes to cover a distance of 20 Km.

2. Sam covers 240 km by car at a speed of 80 km/hr. Find the time taken to cover this distance?

Solution:

Given that Sam covers 240 km by car at a speed of 80 km/hr.
Therefore, the distance = 240 km, the speed = 80 km/hr.
We know that Speed = distance/time.
Time = distance/speed
Time = 240 km/80 km/hr = 3 hours.

Sam takes 3 hours to cover the distance 240 km at a speed if 80 Km/hr.

3. A bus covers a distance of 72 km in 30 minutes. Find the time taken by it to cover the same distance if its speed is decreased by 18 km/hr?

Solution:

Given that a bus covers a distance of 72 km in 30 minutes.
Therefore, the distance = 72 km, the time = 30 minutes,
30 minutes = 30/60 hours = 1/2 hours
We know that Speed = distance/time.
Substitute the given value in the formula.
Speed =  72 km/1/2 hours
Speed = 72 × 2 km/hours
The Speed = 144 km/hours
Speed = 144 km/hr
Reduced Speed = 144 km/hr – 18 km/hr = 126 km/hr
Time = distance/speed
The time = 72 km/126 km/hr
Time = 72/126 × 60 minutes
Time = 34.28 minutes (approximately).

The bus takes 34.28 minutes to cover the same distance if its speed is decreased by 18 km/hr.

4. A man is walking at a speed of 4 km per hour. After every km, he takes a rest for 2 minutes. How much time will it take to cover a distance of 6 km?

Solution:

Given that a man is walking at a speed of 4 km per hour.
Firstly, find the rest time to find the total time taken.
Rest time = Number of rests × time of each rest
Rest time = 5 × 2 minutes
The Rest time = 10 minutes
Time = distance/speed
Time = 6 km/4 km per hour
The time = 3/2 × 60 minutes = 90 minutes
Total time to cover 6 km = 90 minutes + 10 minutes = 100 minutes.

The man takes 100 minutes to cover a distance of 6 km.

5. Raj drives a bike at a uniform speed of 120 km/hr; Find the time taken by him to cover 560 km?

Solution:

Given that a car travels Raj drives a bike at a uniform speed of 120 km/hr and the distance = 560 km.
We know that Speed = distance/time
Substitute the given value in the formula.
The time = distance/speed
Time = 560 km/120 km/hr
Time = 14/3 hr
Since 1 hour = 60 minutes
The time = (14/3) × 60 minutes = 280 minutes.

Raj takes 280 minutes to cover a distance of 560 km.

6. The speed of sound in air is 165 m/sec. How long will the sound take to travel 99 km?

Solution:

Given that the speed of sound in air is 165 m/sec.
Convert speed into km/hr
m/sec × 18/5 = km/hr
165 m/sec × 18/5 = 594 km/hr
Given distance = 99 km
Time = distance/speed
Time = 99 km/ 594 km/hr
Time = 99/594 km/hr
The time = (99/594) × 60 minutes = 10 minutes.

Therefore, Sound takes 10 minutes to travel 99 km.

7. Ram walks 4 km in 60 minutes. How much time will he take to cover 800 m?

Solution:

Given that Ram walks 4 km in 60 minutes.
Firstly, find the speed.
Speed = distance/time
60 minutes = 1 hr
the distance = 4 km, the time = 1 hr
Speed = 4 km/hr.
Convert speed into m/sec
km/hr × 5/18 = m/sec
Speed = 4 km/hr × 5/18 = 20/18 m/sec.
Now, find the time that covers 800 m.
Time = Distance/Speed
Time = 800 m/20/18 m/sec.
The Time = 800 × 18/20 sec
Time = 720 sec = 720 × 60 minutes = 43200 minutes.

Ram takes 43200 minutes to cover 800m.

8. Arun cycle and covers a certain distance at the rate of 3 km/hr in 1 1/2 hours. How much time will be taken by him if he covers the same distance by scooter at the rate of 20 km/hr?

Solution:

Given that Arun cycle and covers a certain distance at the rate of 3 km/hr in 1 1/2 hours.
Speed = 3 km/hr, Time = 1 1/2 hours = 3/2 hours
Distance = Speed × Time
The distance = 3 km/hr × 3/2 hours = 9/2 km
If he covers the same distance by scooter at the rate of 20 km/hr,
Time = distance/speed
The time = (9/2 km)/20 km/hr = 9/40 hr
Time = 9/40 hr × 60 = 13.5 minutes.

The man takes 13.5 minutes to cover the same distance using a scooter at the rate of 20 km/hr.

9. A man is walking at a speed of 24 km/hr after every km, he takes rest for 2 minutes. How much time will it take to cover a distance of 8 km?

Solution:

Given that a man is walking at a speed of 24 km per hour.
Firstly, find the rest time to find the total time taken.
Rest time = Number of rests × time of each rest
Rest time = 7 × 2 minutes
The Rest time = 14 minutes
The time to cover 8 km is
Time = distance/speed.
Time = 8 km/24 km per hour
The time = 1/3 × 60 minutes = 20 minutes
Total time to cover 8 km = 20 minutes + 14 minutes = 34 minutes.

Therefore, the man takes 34 minutes to cover a distance of 8 Km.

10. A bike covers a distance of 15 km in 6 minutes. Find the time taken by it to cover the same distance if its speed is increased by 5 km/hr.

Solution:

Given that a bike covers a distance of 15 km in 6 minutes.
the distance = 15 km, the time = 6 minutes = 6/60 = 1/10 hr
Calculate the speed.
We know that Speed = distance/time.
Speed = 15 km/ (1/10 hr)
The speed = 15 km × 10 hr = 150 km/hr
If the speed is increased by 5 km/hr, 150 km/hr + 5 km/hr = 155 km/hr
Time = Distance/Speed
The time = 15 km/ 155 km/hr
Time = 15/155 × 60 minutes
Time = 5.80 minutes (approximately)

11. A bus is running at 28 km/hr. What time will it take to cover 280 meters?

Solution:

Given that a bus is running at 28 km/hr.
Speed = 28 km/hr
Distance = 280 meters
Convert Speed into m/sec
km/hr × (5/18) = m/sec
28 km/hr × (5/18) = 140/18 m/sec
Speed = 140/18 m/sec
Time = Distance/Speed
The time = 280 meters/ (140/18 m/sec)
Time = 280 × 18/140 sec
Time = 36 sec
The time taken to cover 280 meters = 36 × 60 minutes = 2160 minutes.