Hi help needed for these questions! ASAP pls as my child has an exam coming up!!


1) A bus left town A for town B at a speed of 45km/h. At the same time, a van left Town B for Town A at the speed of 55km/h. Both vehicles travelled along the same road. how far apart were they 1 hour before they met (ans:100km)

2) At 09 00, a van left Town P for Town Q. After some time, a car left Town Q for Town P. The two vehicles met at 11 30. The ratio of the average speed of the van to the average speed of the car is 3:5.
a) What time did the car leave town Q (ans:10 00)
b) If the distance between town P and Town Q is 150 km, calculate the average speed of the van. (ans:30km/h)

3) The ratio of the amount of water in Bottle A to the amount of water in Bottle B was 2:1. After 60ml of water was pured into Bottle A and 150ml was poured out of bottle B, the ratio became 4:1.
What was the amount of water in bottle A at first? (Ans:660)

TIA!