Question:
At a certain speed a car covers a distance of 10 km in 2 hours. How much distance will it cover in 3 hour?
Correct Answer
15 km
Solution And Explanation
Solution
Given,
Distance = 10 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
= 10/2 = 5 km/h
Thus, speed = 5 km/h
Calculation of the distance in the given time using formula
Formula to find the distance
Distance = Speed × Time
= 5 km/h × 3 hour = 15 km
Thus, the distance covered in the given time = 15 km Answer
Method (2) Using Unitary Method
Calculation of the Distance using formula
Given,
Distance = 10 km
Time = 2 hour
Thus, distance covers in 3 hour = ?
∵ In 2 hours the distance covered = 10 km
∴ In 1 hour the distance covered = 10/2 km
∴ In 3 hours the distance covered
= 10/2 × 3 km
= 10 × 3/2 km
= 30/2 = 15 km
Thus, the distance covered in the given time = 15 km Answer
Similar Questions
(1) At a certain speed a scooty covers a distance of 8 km in 4 hours. How much distance will it cover in 5 hour?
(2) By running at a speed of 47 km/h how much distance an athlete will cover in 10 second?
(3) By running at a speed of 18 km/h how much distance a motor bike will cover in 8 second?
(4) By running at a speed of 38 km/h how much distance a motor bike will cover in 8 second?
(5) Find the distance covered by a cyclist in 21 hours if it covers a distance of 82 km in 11 hours.
(6) By running at a speed of 9 km/h how much distance a car will cover in 5 second?
(7) Find the distance covered by a ball in 26 hours if it covers a distance of 72 km in 16 hours.
(8) Find the distance covered by a cricket ball in 27 hours if it covers a distance of 62 km in 17 hours.
(9) By running at a speed of 22 km/h how much distance a cyclist will cover in 6 second?
(10) An athlete takes 1 minute 20 second to complete a race of 1000 meter. Find the speed of the athlete in kilometre per hour.