428  Speed
2

Name : _________________

refresh

Two trains that are 640 km apart are heading towards each other at 60 km/h and 100 km/h. How many hours will it be before they meet?



Two trains that are 780 km apart are heading towards each other at 60 km/h and 70 km/h. How many hours will it be before they meet?



Two trains that are 1020 km apart are heading towards each other at 70 km/h and 100 km/h. How many hours will it be before they meet?



Two trains that are 900 km apart are heading towards each other at 100 km/h and 50 km/h. How many hours will it be before they meet?



Two trains that are 340 km apart are heading towards each other at 80 km/h and 90 km/h. How many hours will it be before they meet?

Two trains that are 1330 km apart are heading towards each other at 90 km/h and 100 km/h. How many hours will it be before they meet?



Two trains that are 960 km apart are heading towards each other at 100 km/h and 60 km/h. How many hours will it be before they meet?



960 km 떨어진 양쪽 두 도시에서 각각 두대의 기차가 서로를 향해 50 km/h 와 70 km/h의 속도로 달려 오고있다. 두대의 기차가 서로 만나는데 몇시간이 걸리는가?



Two trains that are 550 km apart are heading towards each other at 60 km/h and 50 km/h. How many hours will it be before they meet?



Two trains that are 1120 km apart are heading towards each other at 80 km/h and 60 km/h. How many hours will it be before they meet?

+(         )

(         )+

++[[          ]]++