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 & 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
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(2) Find the distance covered by a ball in 26 hours if it covers a distance of 80 km in 16 hours.
(5) By running at a speed of 8 km/h how much distance a bus will cover in 9 second?
(6) Find the distance covered by a motor bike in 23 hours if it covers a distance of 84 km in 13 hours.
(7) By running at a speed of 30 km/h how much distance a cyclist will cover in 6 second?
(8) Find the distance covered by a ball in 26 hours if it covers a distance of 86 km in 16 hours.
(9) Find the distance covered by a car in 20 hours if it covers a distance of 54 km in 10 hours.
(10) By running at a speed of 12 km/h how much distance an athlete will cover in 10 second?