651  Speed
1

Name : _________________

 

refresh

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



Two trains that are 1190 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 1530 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 400 km apart are heading towards each other at 100 km/h and 100 km/h. How many hours will it be before they meet?



Two trains that are 600 km apart are heading towards each other at 100 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 50 km/h and 50 km/h. How many hours will it be before they meet?



Two trains that are 850 km apart are heading towards each other at 90 km/h and 80 km/h. How many hours will it be before they meet?



Two trains that are 240 km apart are heading towards each other at 60 km/h and 60 km/h. How many hours will it be before they meet?



Two trains that are 640 km apart are heading towards each other at 80 km/h and 80 km/h. How many hours will it be before they meet?



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



+(         )

 

(         )+

++[[          ]]++

651    7 7 9 2 3 ( 28 )   9 5 2 4 7 ( 27 )   [[ 55 ]]