Question:
At a certain speed a car covers a distance of 80 km in 2 hours. How much distance will it cover in 3 hour?
Correct Answer
120 km
Solution And Explanation
Solution
Given,
Distance = 80 km
Time = 2 hour
Thus, distance covers in 3 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
= 80/2 = 40 km/h
Thus, speed = 40 km/h
Calculation of the distance in the given time using formula
Formula to find the distance
Distance = Speed × Time
= 40 km/h × 3 hour = 120 km
Thus, the distance covered in the given time = 120 km Answer
Method (2) Using Unitary Method
Calculation of the Distance using formula
Given,
Distance = 80 km
Time = 2 hour
Thus, distance covers in 3 hour = ?
∵ In 2 hours the distance covered = 80 km
∴ In 1 hour the distance covered = 80/2 km
∴ In 3 hours the distance covered
= 80/2 × 3 km
= 80 × 3/2 km
= 240/2 = 120 km
Thus, the distance covered in the given time = 120 km Answer
Similar Questions
(1) At a certain speed a scooty covers a distance of 36 km in 4 hours. How much distance will it cover in 5 hour?
(2) By running at a speed of 10 km/h how much distance an athlete will cover in 10 second?
(3) By running at a speed of 22 km/h how much distance a cyclist will cover in 6 second?
(4) By running at a speed of 20 km/h how much distance an athlete will cover in 10 second?
(5) Find the distance covered by a motor bike in 23 hours if it covers a distance of 80 km in 13 hours.
(6) Find the distance covered by a bus in 24 hours if it covers a distance of 56 km in 14 hours.
(7) By running at a speed of 40 km/h how much distance a car will cover in 5 second?
(8) An athlete takes 10 second to complete a race of 200 meter. Find the speed of the athlete in kilometre per hour.
(9) Find the distance covered by a car in 20 hours if it covers a distance of 100 km in 10 hours.
(10) By running at a speed of 39 km/h how much distance a scooty will cover in 7 second?