Question:
Find the distance covered by a car in 20 hours if it covers a distance of 72 km in 10 hours.
Correct Answer
144 km
Solution And Explanation
Solution
Given,
Distance = 72 km
Time = 10 hour
Thus, distance covers in 20 hour = ?
Here the speed and time are given. So, we need to find the speed to calculate the distance covers in the given time.
Method (1) Using Formula
Calculation of Speed using formula
Formula to find the speed
Speed = Distance/Time
= 72/10 = 7.2 km/h
Thus, speed = 7.2 km/h
Calculation of the distance in the given time using formula
Formula to find the distance
Distance = Speed × Time
= 7.2 km/h × 20 hour = 144 km
Thus, the distance covered in the given time = 144 km Answer
Method (2) Using Unitary Method
Calculation of the Distance using formula
Given,
Distance = 72 km
Time = 10 hour
Thus, distance covers in 20 hour = ?
∵ In 10 hours the distance covered = 72 km
∴ In 1 hour the distance covered = 72/10 km
∴ In 20 hours the distance covered
= 72/10 × 20 km
= 72 × 20/10 km
= 1440/10 = 144 km
Thus, the distance covered in the given time = 144 km Answer
Similar Questions
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(2) By running at a speed of 9 km/h how much distance a car will cover in 5 second?
(3) At a certain speed a car covers a distance of 70 km in 2 hours. How much distance will it cover in 3 hour?
(4) By running at a speed of 22 km/h how much distance a bus will cover in 9 second?
(5) Find the distance covered by a moving object in 28 hours if it covers a distance of 100 km in 18 hours.
(6) After spotting a deer at a distance of 500 m, a tiger takes 1 minute 05 second to catch the prey. If after spotting the deer, the tiger takes about 15 second in thinking and then starts running, then find the speed of the tiger in kilometre per hour.
(7) Find the distance covered by a ball in 26 hours if it covers a distance of 98 km in 16 hours.
(8) By running at a speed of 43 km/h how much distance a scooty will cover in 7 second?
(9) By running at a speed of 33 km/h how much distance an athlete will cover in 10 second?
(10) By running at a speed of 20 km/h how much distance a car will cover in 5 second?