Question:
At a certain speed a car covers a distance of 90 km in 2 hours. How much distance will it cover in 3 hour?
Correct Answer
135 km
Solution And Explanation
Solution
Given,
Distance = 90 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
= 90/2 = 45 km/h
Thus, speed = 45 km/h
Calculation of the distance in the given time using formula
Formula to find the distance
Distance = Speed × Time
= 45 km/h × 3 hour = 135 km
Thus, the distance covered in the given time = 135 km Answer
Method (2) Using Unitary Method
Calculation of the Distance using formula
Given,
Distance = 90 km
Time = 2 hour
Thus, distance covers in 3 hour = ?
∵ In 2 hours the distance covered = 90 km
∴ In 1 hour the distance covered = 90/2 km
∴ In 3 hours the distance covered
= 90/2 × 3 km
= 90 × 3/2 km
= 270/2 = 135 km
Thus, the distance covered in the given time = 135 km Answer
Similar Questions
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(2) Find the distance covered by an athlete in 25 hours if it covers a distance of 90 km in 15 hours.
(3) By running at a speed of 11 km/h how much distance a car will cover in 5 second?
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(6) Find the distance covered by a motor bike in 23 hours if it covers a distance of 50 km in 13 hours.
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(8) By running at a speed of 6 km/h how much distance a motor bike will cover in 8 second?
(9) Find the distance covered by a commet in 27 hours if it covers a distance of 100 km in 17 hours.
(10) Find the distance covered by an athlete in 25 hours if it covers a distance of 80 km in 15 hours.