Question
A man is travelling at a speed of 20 km/h such that he
will take 60 minutes to reach his destination. But after completing half the journey, the man took a break of 15 minutes and then continued his journey. Find the speed at which the man must cover rest of the journey to reach his destination in original time.Solution
Total distance to be covered = 20 × (60/60) = 20 km Time taken to cover half the distance at original speed = {(20 ÷ 2) ÷ 20} × 60 = 30 minutes Time remaining = 60 – 30 – 15 = 15 minutes Required speed = 10 ÷ 15 × 60 = 40 km/h
The time complexity of computing the all-pairs shortest paths in a dense graph with V vertices using Floyd–Warshall is:
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Which of the following is a primary challenge associated with Cloud Security?
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Which of the following is NOT a greedy algorithm?
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