A car travels 90 km in 2 1/2 hours (1) How much time is required to cover 30 km with the same speed (2) Find the distance covered in 2 hours with the same speed
Answers
(a) How much time is required to cover 30 km with the same speed.
In this Case, time is unknown and distance is known.
Therefore,
We proceed as follows:
=> 2½ hours
=> 5/2 hours
=> 5/2 × 60 minutes
=> 150 minutes
90 km is covered in 150 minutes
Therefore,
=> 1 km can be covered in 150/90 minutes
Therefore,
=> 30 km can be covered in 150/90 × 30 minutes
=> 30 km can be covered in 50 minutes
Thus:-
30 km can be covered in 50 minutes.
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(b) Find the distance covered in 2 hours with the same speed.
In this case, distance is unknown and time is known.
Therefore,
We can proceed follows:
=> Distance covered in 2½ hours
=> Distance covered in 5/2 hours
=> Distance covered = 90 km
Therefore,
=> Distance covered in 2 hours = 36 × 2
=> Distance covered in 2 hours = 72 km
Thus:-
In 2 hours, distance covered is 72 km.