Question

Помогите пожалуйста! Миша идет по ровной местности со скоростью 4 км/ч,под гору со скоростью 6 км/ч,а в гору со скоростью 3 км/ч. За какое время он сходит до библиотеки и вернётся домой,если библиотека находиться в соседнем селе на растоянии 4 км? Рельеф местности неизвестен

Answer 1

Примерно через полтара часа.

Answer 2

Calculating Time to Reach the Library and Return Home

To calculate the time it takes for Misha to reach the library and return home, we can use the formula: time = distance / speed.

1. Time to Reach the Library: - Misha walks to the library at a speed of 4 km/h. - The distance to the library is 4 km. - Using the formula, time = distance / speed, the time to reach the library is 4 km / 4 km/h = 1 hour.

2. Time to Return Home Uphill: - Misha walks uphill from the library at a speed of 3 km/h. - The distance is the same, 4 km. - Using the formula, time = distance / speed, the time to return home uphill is 4 km / 3 km/h = approximately 1.33 hours.

3. Time to Return Home Downhill: - Misha walks downhill from the library at a speed of 6 km/h. - The distance is the same, 4 km. - Using the formula, time = distance / speed, the time to return home downhill is 4 km / 6 km/h = approximately 0.67 hours.

Total Time

To find the total time for the entire trip, we add the time to reach the library and the time to return home uphill and downhill: 1 hour (to reach the library) + 1.33 hours (to return home uphill) + 0.67 hours (to return home downhill) = 3 hours.

Therefore, it will take Misha approximately 3 hours to walk to the library and return home.