# Mathematics - Class 5 / Grade 5

- Time
### Time

Math - Class 5 - Time (Speed, Distance and Time) / Calculate Time from Distance and Speed / Word Problems on Time - Key Points/Notes/Worksheets/Explanation/Lesson/Practice Questions Tags: Definition of Time, Free Downloadable Worksheet PDF on Time for class 5, Lesson on Time for fifth Grade, Finding Time worksheet PDF for class V, How to calculate the time? Word Problems on Time for grade 5, Units of Measurement of Time, Practice Question on Time for 5th standard with solution, Example on word problem on time with answers, Practice Page on time, How to find time when speed and distance are given, How much time will be taken to cover a distance of 200 km at a speed of 50 km per hour? How long will a cyclist take to cover a distance of 400m, if the speed is 40 km per hour? Calculate the time taken when, distance is 7000 km and speed is 700 km/hr.Time (Speed, Distance and Time)

Ria reaches her school in 10 minutes whereas her friend Dia takes 15 minutes to reach. This mean Ria takes lesser time than her friend Dia to reach school.

In the above, the word ‘time’ has been used. Time is measured in seconds, minutes and hours.

When distance and speed are given in the question we measure time in the following way.

Illustration 1: How much time will be taken to cover a distance of 100 km at a speed of 10 km per hour?

__Solution:__Time taken to cover 10 km = 1hr.

Time taken to cover 1 km = 1/10 hrs.

Time taken to cover 100km

= 1/10 x 100

= 10 hrs.

Illustration 2: A car covers a distance of 150 km at a speed of 50 km/hour. Find the time taken to cover this distance.

__Solution:__Time = distance/speed

Time = 150 km/(50 km/hour)

= 3 hours.

Illustration 3: A motor cyclist covers a distance of 20 km at a speed of 10km per hour. Calculate the time taken to cover this distance.

__Solution:__Speed = 10 km/hour

Distance covered = 20 km

Time = distance/speed

= 20/10 hour

= 2 hours

Illustration 4: A boy runs at a speed of 20 m per minute. How much time will be taken to cover a distance of 1km?

__Solution:__20 m is covered in 1 min

1 m is covered in 1/20 min

1000 m (i.e. 1km) is covered in 1/20 x 1000 = 50 min

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