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Directions -
In the following question 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.
Q. What is the speed of a motorboat in still water?
I. The motorboat covers a distance of 140 km in 4 hours while running upstream.
II. It covers the same distance in 3 hours 30 minutes while running downstream.
  • a)
    Either I or II 
  • b)
    Only II
  • c)
    Neither I nor II
  • d)
    Both I and II
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Directions -In the following question below consists of a question and...
From I and II
Let the speed of the motorboat be a km/hr
Speed of the stream be b km/hr
Speed of upstream a - b= 140/4 = 35 ……(i)
Speed downstream a + b = 140/ 3(1/2) = 40 …….(ii)
Solving (i) and (ii),
we get a= 37.5 km/hr and b = 2.5 km/hr
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Most Upvoted Answer
Directions -In the following question below consists of a question and...
The Question:
What is the speed of a motorboat in still water?

Statement I:
The motorboat covers a distance of 140 km in 4 hours while running upstream.

Statement II:
It covers the same distance in 3 hours 30 minutes while running downstream.

Answer:
The answer is Both I and II

Explanation:
To find the speed of the motorboat in still water, we need to consider both the upstream and downstream speeds.

Let's analyze each statement separately:

Statement I:
The motorboat covers a distance of 140 km in 4 hours while running upstream.

From this statement, we can calculate the speed of the motorboat relative to the current when it is moving against the current. This speed can be calculated using the formula:
Speed = Distance / Time

So, the speed of the motorboat relative to the current while moving upstream is 140 km / 4 hours = 35 km/h.

Statement II:
It covers the same distance in 3 hours 30 minutes while running downstream.

From this statement, we can calculate the speed of the motorboat relative to the current when it is moving with the current. This speed can also be calculated using the formula:
Speed = Distance / Time

So, the speed of the motorboat relative to the current while moving downstream is 140 km / (3 hours + 30 minutes) = 140 km / 3.5 hours = 40 km/h.

Conclusion:
Since we have obtained the speed of the motorboat relative to the current in both upstream and downstream scenarios, we can calculate the speed of the motorboat in still water by finding the average of these two speeds.

Average Speed = (35 km/h + 40 km/h) / 2 = 75 km/h / 2 = 37.5 km/h.

Hence, both statements I and II are individually sufficient to answer the question, and the correct answer is option D.
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Directions -In the following question 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.Q. What is the speed of a motorboat in still water?I. The motorboat covers a distance of 140 km in 4 hours while running upstream.II. It covers the same distance in 3 hours 30 minutes while running downstream.a)Either I or IIb)Only IIc)Neither I nor IId)Both I and IICorrect answer is option 'D'. Can you explain this answer?
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Directions -In the following question 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.Q. What is the speed of a motorboat in still water?I. The motorboat covers a distance of 140 km in 4 hours while running upstream.II. It covers the same distance in 3 hours 30 minutes while running downstream.a)Either I or IIb)Only IIc)Neither I nor IId)Both I and IICorrect answer is option 'D'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about Directions -In the following question 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.Q. What is the speed of a motorboat in still water?I. The motorboat covers a distance of 140 km in 4 hours while running upstream.II. It covers the same distance in 3 hours 30 minutes while running downstream.a)Either I or IIb)Only IIc)Neither I nor IId)Both I and IICorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions -In the following question 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.Q. What is the speed of a motorboat in still water?I. The motorboat covers a distance of 140 km in 4 hours while running upstream.II. It covers the same distance in 3 hours 30 minutes while running downstream.a)Either I or IIb)Only IIc)Neither I nor IId)Both I and IICorrect answer is option 'D'. Can you explain this answer?.
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