Question:
At a certain speed a car covers a distance of 12 km in 2 hours. How much distance will it cover in 3 hour?
Correct Answer
18 km
Solution And Explanation
Solution
Given,
Distance = 12 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
= 12/2 = 6 km/h
Thus, speed = 6 km/h
Calculation of the distance in the given time using formula
Formula to find the distance
Distance = Speed × Time
= 6 km/h × 3 hour = 18 km
Thus, the distance covered in the given time = 18 km Answer
Method (2) Using Unitary Method
Calculation of the Distance using formula
Given,
Distance = 12 km
Time = 2 hour
Thus, distance covers in 3 hour = ?
∵ In 2 hours the distance covered = 12 km
∴ In 1 hour the distance covered = 12/2 km
∴ In 3 hours the distance covered
= 12/2 × 3 km
= 12 × 3/2 km
= 36/2 = 18 km
Thus, the distance covered in the given time = 18 km Answer
Similar Questions
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(2) By running at a speed of 32 km/h how much distance a scooty will cover in 7 second?
(3) An athlete takes 15 hours to finish a race of 75 km. Calculate the speed of athlete in meter per second.
(4) Find the distance covered by a car in 20 hours if it covers a distance of 62 km in 10 hours.
(5) At a certain speed a cyclist covers a distance of 100 km in 3 hours. How much distance will it cover in 4 hour?
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(7) Find the distance covered by a motor bike in 23 hours if it covers a distance of 52 km in 13 hours.
(8) By running at a speed of 31 km/h how much distance a motor bike will cover in 8 second?
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