Question
What is the speed of a boat in still water? I.
The boat covers a distance of 120km in 5 hours while running upstream. II. It covers the same distance in 3 hours while running downstream. Each of the following questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and give answer.Solution
From I and II Let the speed of the boat be x km/hr Speed of the stream be y km/hr ∴ Speed of upstream x – y = 120/5 = 24……(i) Speed downstream x + y = 120/3 = 40 …….(ii) From eq. (i) and (ii), we get x = 32 km/hr and y = 8 km/hr
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