Question

Иан и Назар идут навстречу друг другу из двух по просёлочной дороге. Иван идёт со скоростью 3км/ч, а Назар - 4км/ч. Сейчас между ними 21 км. Какое расстояние будет между ними через 2 ч?

Answer 1

1)3*2=6 км пройдет иван за 2 часа

2)4*2=8 км пройдет назар за 2 часа

3)21-6-8=7 км будет между ними ерез 2 часа

Ответ 7 км 

Answer 2

1)3+4=7км/ч-скорость сближения.

2)7*2=14км-проедут вместе за 2 часа.

3)21-14=7км-будет между ними через 2 часа.

Answer 3

Calculation of Distance:

To calculate the distance between Ivan and Nazar after 2 hours, we need to find the total distance each person has traveled in that time.

Ivan's speed is 3 km/h, so in 2 hours, he will have traveled 6 km.

Nazar's speed is 4 km/h, so in 2 hours, he will have traveled 8 km.

Currently, there is a distance of 21 km between them. To find the distance between them after 2 hours, we subtract the total distance traveled by each person from the initial distance.

Therefore, the distance between Ivan and Nazar after 2 hours will be:

21 km - (6 km + 8 km) = 7 km.

Answer:

The distance between Ivan and Nazar will be 7 km after 2 hours.