Question

Из двух деревень в 18 ч 20 мин выехали навстречу друг другу два мопеда скорость первого мопеда 19 км/ч а второго 21 км/ч найди расстояние между деревнями если мопеды встретились в 20 ч 20 мин

Answer 1

20ч 20 мин - 18ч 20 мин = 2ч они были в пути
19 + 21 =40 км/ч скорость сближения
40 * 2 =80 км расстояние между деревень
     ответ 80 км

Answer 2

Calculating the Distance Between Villages

To find the distance between the two villages, we can use the formula: distance = speed * time. Given that the two mopeds traveled towards each other and met at a certain time, we can calculate the distance between the villages.

Given Data

- Speed of the first moped (M1): 19 km/h - Speed of the second moped (M2): 21 km/h - Time of meeting: 20:20 (8:20 PM)

Calculating the Time of Travel

The total time of travel can be calculated by subtracting the meeting time from the departure time.

Departure time: 18:20 (6:20 PM) Meeting time: 20:20 (8:20 PM)

Total time of travel = 20:20 - 18:20 = 2 hours

Calculating the Distance

Using the formula distance = speed * time, we can calculate the distance between the villages.

For the first moped (M1): - Speed (S1): 19 km/h - Time (T): 2 hours

Distance covered by M1 = 19 km/h * 2 h = 38 km

For the second moped (M2): - Speed (S2): 21 km/h - Time (T): 2 hours

Distance covered by M2 = 21 km/h * 2 h = 42 km

Finding the Total Distance

The total distance between the villages can be found by adding the distances covered by both mopeds.

Total distance = Distance covered by M1 + Distance covered by M2 Total distance = 38 km + 42 km Total distance = 80 km

Therefore, the distance between the two villages is 80 kilometers when the mopeds met at 20:20 (8:20 PM).