Question

Мальчик дважды пробежал по движущемуся эскалатору метро и посчитал ступеньки.В первый раз он насчитал 40 ступенек ,а во второй двигаясь в три раза быстрее насчитал 60 ступенек сколько ступенек он насчитает на неподвижном эскалаторе

Answer 1

Он подсчитает 1ступеньку потомучто он будет стоять на ней

Answer 2

Calculation on a Moving Escalator

To calculate the number of steps the boy will count on a stationary escalator, we need to analyze the information provided.

According to the question, the boy ran twice on a moving escalator in the subway. The first time, he counted 40 steps, and the second time, moving three times faster, he counted 60 steps.

To find the number of steps on a stationary escalator, we need to determine the relationship between the boy's speed and the escalator's speed.

Let's assume that the boy's speed is represented by B and the escalator's speed is represented by E.

In the first run, the boy's speed relative to the escalator is B - E (since the escalator is moving in the opposite direction). The boy counted 40 steps.

In the second run, the boy's speed relative to the escalator is B + 3E (since the escalator is moving in the same direction, and the boy is