Problem solving, distance–time–speed, joint motion and opposite motion
Answers are for parents and teachers.
1
A bus travelled at 60 km/h for 5 h. How many km did it cover?
300
2
How many hours does a cyclist at 18 km/h need for 54 km?
3
3
On a sports field two children 100 m apart run towards each other at 2 m/s and 3 m/s. How many m apart are they after 10 s?
50
4
Toshkent and Samarqand are about 300 km apart. Two cars set out towards each other at 70 and 80 km/h. After how many hours do they meet?
2
5
A notebook costs 3 500 sum. How many sum do 7 notebooks cost?
24500