Question:
Find the distance covered by a moving object in 28 hours if it covers a distance of 90 km in 18 hours.
Correct Answer
140 km
Solution And Explanation
Solution
Given,
Distance = 90 km
Time = 18 hour
Thus, distance covers in 28 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
= 90/18 = 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 × 28 hour = 140 km
Thus, the distance covered in the given time = 140 km Answer
Method (2) Using Unitary Method
Calculation of the Distance using formula
Given,
Distance = 90 km
Time = 18 hour
Thus, distance covers in 28 hour = ?
∵ In 18 hours the distance covered = 90 km
∴ In 1 hour the distance covered = 90/18 km
∴ In 28 hours the distance covered
= 90/18 × 28 km
= 90 × 28/18 km
= 2520/18 = 140 km
Thus, the distance covered in the given time = 140 km Answer
Similar Questions
(1) Find the distance covered by an athlete in 25 hours if it covers a distance of 60 km in 15 hours.
(2) Find the distance covered by a moving object in 28 hours if it covers a distance of 72 km in 18 hours.
(3) At a certain speed a car covers a distance of 36 km in 2 hours. How much distance will it cover in 3 hour?
(4) By running at a speed of 13 km/h how much distance a car will cover in 5 second?
(5) An athlete takes 15 hours to finish a race of 75 km. Calculate the speed of athlete in meter per second.
(6) By running at a speed of 31 km/h how much distance a car will cover in 5 second?
(7) By running at a speed of 14 km/h how much distance an athlete will cover in 10 second?
(8) By running at a speed of 2 km/h how much distance a scooty will cover in 7 second?
(9) At a certain speed a cyclist covers a distance of 76 km in 3 hours. How much distance will it cover in 4 hour?
(10) By running at a speed of 33 km/h how much distance a car will cover in 5 second?