Question : If a car is running with a speed of 90 km/h, then how much distance will it cover in 1 hour 15 minute?
Correct Answer 112.5 kilometer
Solution & Explanation
Solution
Given, speed of the car = 90 km/h
And, time = 1 hour 15 minute
= 1 hour + 15 1/ 60 4 hour
= 1 + 1/4 hour
= 1 + 0.25 hour
Thus, time = 1.25 hour
Calculation of distance using formula when speed and time are given
We know that
Distance = Speed × Time
Therefore, the distance covered by the car with the given speed and time
= 90 km/h × 1.25 hour
= 112.5 km
Thus, distance covered by the car = 112.5 km Answer
Calculation of distance using unitary method when speed and time are given
Given, speed of the car = 90 km/h
And, time = 1 hour 15 minute
= 1 hour + 15 1/ 60 4 hour
= 1 + 1/4 hour
= 1 + 0.25 hour
Thus, time = 1.25 hour
∵ In 1 hour, the distance covered by the car = 90 km
∴ In 1.25 hour, the distance covered by the car = 90 × 1.25 km
= 112.5 km
Thus, distance covered by the car = 112.5 km Answer
Similar Questions
(1) By running at a speed of 18 km/h how much distance a motor bike will cover in 8 second?
(3) Find the distance covered by a cyclist in 21 hours if it covers a distance of 76 km in 11 hours.
(5) Find the distance covered by a motor bike in 23 hours if it covers a distance of 78 km in 13 hours.
(6) By running at a speed of 7 km/h how much distance a motor bike will cover in 8 second?
(8) By running at a speed of 3 km/h how much distance a scooty will cover in 7 second?
(10) Find the distance covered by a cyclist in 21 hours if it covers a distance of 70 km in 11 hours.