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 33 km/h how much distance a cyclist will cover in 6 second?
(3) By running at a speed of 47 km/h how much distance a bus will cover in 9 second?
(4) If a cyclist covers a distance of 28 km in 7 hours, then how much distance will he cover in 5 hour? And what is his speed?
(5) By running at a speed of 25 km/h how much distance a bus will cover in 9 second?
(6) At a certain speed a cyclist covers a distance of 38 km in 3 hours. How much distance will it cover in 4 hour?
(7) By running at a speed of 6 km/h how much distance a motor bike will cover in 8 second?
(8) Find the distance covered by a cyclist in 21 hours if it covers a distance of 72 km in 11 hours.
(9) By running at a speed of 25 km/h how much distance an athlete will cover in 10 second?
(10) Find the distance covered by a car in 20 hours if it covers a distance of 68 km in 10 hours.