Question

Starting from my office. I reach the house 20 min late if I walk at 3km/h Instead, if I walk at 4k/I reach the horse 15 min
early. How far is my house from my office?
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Answer 1

Answer:

I don't understand please tell me clearly

Answer 2

Answer:

The correct answer is : 12 km

Step-by-step explanation:

We want to find the distance between an office and a house, so we will use the variable "d" to represent this distance, which is measured in kilometers.

If a person walks at a  speed of 3 km/h, the time taken to cover the distance between the office and the house is given by the formula: time = distance / speed = $d / 3$.

The person arrives 20 minutes late to the destination. We can calculate the actual time, taken as the sum of the time taken to cover the distance plus the delay of 20 minutes: $time taken = actual time taken + delay =$$d / 3 + 20/60$.

Similarly, if a person walks at a speed of 4 km/h, the time taken to cover the same distance is given by the formula: time = distance / speed = d / 4.

The person arrives 15 minutes early to the destination. We can calculate the actual time taken as the time taken, to cover the distance minus the early arrival of 15 minutes:$time taken = actual time taken - early arrival = d / 4 - 15/60.$

Since, the distance covered is the same in both cases: $d / 3 + 20/60 = d / 4 - 15/60.$

Simplifying this equation, we get: $d = 12 km.$

To learn more about distance, visit:

https://brainly.in/question/47777661

To learn more about speed, visit:

https://brainly.in/question/47561315

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