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InterviewSolution
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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 |
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Answer» (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. _____________________ (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. |
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