686  Speed
1

Name : _________________

 

refresh

Two trains that are 540 km apart are heading towards each other at 80 km/h and 100 km/h. How many hours will it be before they meet?



Two trains that are 1170 km apart are heading towards each other at 80 km/h and 50 km/h. How many hours will it be before they meet?



Two trains that are 360 km apart are heading towards each other at 90 km/h and 90 km/h. How many hours will it be before they meet?



Two trains that are 300 km apart are heading towards each other at 60 km/h and 90 km/h. How many hours will it be before they meet?



Two trains that are 680 km apart are heading towards each other at 100 km/h and 70 km/h. How many hours will it be before they meet?



Two trains that are 390 km apart are heading towards each other at 50 km/h and 80 km/h. How many hours will it be before they meet?



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



Two trains that are 1260 km apart are heading towards each other at 80 km/h and 100 km/h. How many hours will it be before they meet?



Two trains that are 1350 km apart are heading towards each other at 100 km/h and 50 km/h. How many hours will it be before they meet?



+(         )

 

(         )+

++[[          ]]++

686    3 9 2 2 4 ( 20 )   3 4 2 7 9 ( 25 )   [[ 45 ]]