Question

Помогите решить задачу: Буратино живет на расстоянии 1км 200м от школы. Уроки в школе начинаются в 8 часов 30 мин. Буратино делает за минуту 120 шагов, длинна шага-40 см. В котором часу Буратино должен выходить из дома,чтобы приходить за 10 мин до начала занятий? 

Answer 1

Problem Analysis

To solve this problem, we need to determine the time at which Buratino should leave his house in order to arrive at school 10 minutes before classes start. We are given that Buratino lives 1 km 200 m away from the school, and he takes 120 steps per minute, with each step being 40 cm long.

Solution

To find the time it takes for Buratino to reach the school, we need to calculate the total distance he needs to cover and divide it by his speed.

1. Convert the distance from kilometers and meters to centimeters: - 1 km = 1000 m = 1000 * 100 cm = 100000 cm - 200 m = 200 * 100 cm = 20000 cm - Total distance = 100000 cm + 20000 cm = 120000 cm

2. Calculate the number of steps Buratino needs to take to cover the distance: - Each step is 40 cm long. - Total steps = Total distance / Length of each step = 120000 cm / 40 cm = 3000 steps

3. Calculate the time it takes for Buratino to cover the distance: - Buratino takes 120 steps per minute. - Time = Total steps / Steps per minute = 3000 steps / 120 steps per minute = 25 minutes

4. Subtract 10 minutes from the total time to find the time Buratino should leave his house: - Time to leave = Time - 10 minutes = 25 minutes - 10 minutes = 15 minutes

5. Convert the time to hours and minutes: - 15 minutes = 0 hours 15 minutes

Therefore, Buratino should leave his house at 8:15 AM to arrive at school 10 minutes before classes start at 8:30 AM.

Answer

Buratino should leave his house at 8:15 AM in order to arrive at school 10 minutes before classes start at 8:30 AM.