One of the questions for Critical Reasoning was:- Two cars A and B cross a flyover in 10 minutes and 30 minutes respectively. Find the speed of Car A. Statements: Car B travels at the 50kmph Train A and B are travelling in opposite directions

Question

Accepted Answer

Car A's speed is 90kmph

Use the formula: Speed = Distance/Time
Assume the distance to be the same for both cars
Calculate Car A's time using the given information
Substitute the values in the formula to get Car A's speed

Accepted Answer

Let's break down the problem and analyze the statements:

Understanding the Problem

We need to find the speed of Car A.
We know Car A takes 10 minutes to cross the flyover.
We know Car B takes 30 minutes to cross the flyover.
Analyzing the Statements

Statement 1: Car B travels at 50 kmph.
This statement provides the speed of Car B.
We can calculate the length of the flyover using Car B's information:
Time taken by Car B = 30 minutes = 0.5 hours
Distance (length of flyover) = Speed × Time = 50 kmph × 0.5 hours = 25 km
Now, we can find the speed of Car A:
Time taken by Car A = 10 minutes = 1/6 hours
Speed of Car A = Distance / Time = 25km / (1/6) hours = 150 kmph.
Therefore, Statement 1 is sufficient.
Statement 2: Train A and B are travelling in opposite directions.
This statement is irrelevant to the problem. We are talking about cars crossing a flyover, not trains. The direction of travel of other possibly existing vehicles is not relevant.
Also, even if the statement was about cars, the direction of travel in this scenario is irrelevant. The cars are crossing a flyover, so their travel direction on other roads is not relevant.
Therefore, Statement 2 is insufficient.
Conclusion

Statement 1 alone is sufficient to determine the speed of Car A.
Statement 2 alone is insufficient.
Therefore, the answer is that Statement 1 alone is sufficient.

Accepted Answer

Only Statement I is sufficient to answer the question.

One of the questions for Critical Reasoning was:- Two cars A and B cross a flyover in 10 minutes and 30 minutes respectively. Find the speed of Car A. Statements: Car B travels at the 50kmph Train A and B are travelling in opposite directions

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