Select the correct answerA man walking at a speed of 30kmph reaches from his house to office at 5pm. Next time at a speed of 60kmph reaches from his house to office at 2pm find the distance of his office from home?Options120km140km180km160km
Question
Select the correct answerA man walking at a speed of 30kmph reaches from his house to office at 5pm. Next time at a speed of 60kmph reaches from his house to office at 2pm find the distance of his office from home?Options120km140km180km160km
Solution
The problem can be solved by using the formula for speed, which is distance/time.
First, we need to find out how long it takes the man to travel from his house to his office at both speeds.
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At 30kmph, he arrives at 5pm. We don't know when he left, so we can't calculate the time yet.
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At 60kmph, he arrives at 2pm. Again, we don't know when he left, so we can't calculate the time.
Without knowing the time he leaves his house, we can't calculate the distance to his office. However, we can infer that he takes half as long to get to the office at 60kmph as he does at 30kmph, because speed and time are inversely proportional.
If we had the time he leaves his house, we could use the formula distance = speed * time to find the distance to his office. But with the information given, we can't find the correct answer.
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