Question : Find the distance covered by a car in 20 hours if it covers a distance of 78 km in 10 hours.
Correct Answer 156 km
Solution & Explanation
Solution
Given,
Distance = 78 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
= 78/10 = 7.8 km/h
Thus, speed = 7.8 km/h
Calculation of the distance in the given time using formula
Formula to find the distance
Distance = Speed × Time
= 7.8 km/h × 20 hour = 156 km
Thus, the distance covered in the given time = 156 km Answer
Method (2) Using Unitary Method
Calculation of the Distance using formula
Given,
Distance = 78 km
Time = 10 hour
Thus, distance covers in 20 hour = ?
∵ In 10 hours the distance covered = 78 km
∴ In 1 hour the distance covered = 78/10 km
∴ In 20 hours the distance covered
= 78/10 × 20 km
= 78 × 20/10 km
= 1560/10 = 156 km
Thus, the distance covered in the given time = 156 km Answer
Similar Questions
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(2) Find the distance covered by a car in 20 hours if it covers a distance of 98 km in 10 hours.
(3) By running at a speed of 14 km/h how much distance a bus will cover in 9 second?
(4) By running at a speed of 49 km/h how much distance a cyclist will cover in 6 second?
(5) Find the distance covered by a motor bike in 23 hours if it covers a distance of 66 km in 13 hours.
(6) By running at a speed of 44 km/h how much distance a cyclist will cover in 6 second?
(7) By running at a speed of 24 km/h how much distance an athlete will cover in 10 second?
(8) Find the distance covered by an athlete in 25 hours if it covers a distance of 60 km in 15 hours.