Level 2
The graph shows the temperature of water in a pot from 08 00 to 08 30.
  1. For how many minutes was the temperature of the water 50°C and below?
  2. During which two 5-minute intervals did the temperature of water decrease at the same rate?
  3. What was the change in temperature per minute from 08 25 to 08 30? Give your answer in °C per minute.
3 m
Level 3
Lennie gave 58 of his salary to his wife. He gave 15 of his salary to his four children and left the rest for himself. He had $420 left for himself. Given that his four children received the same amount each, how much did each of his four children receive?
4 m
Level 2
At a shop, dining chairs were sold for the price shown.
Usual price of one dining chair: $30
John bought some dining chairs at a discount of 30%. He paid $168 in total. How many dining chairs did he buy?
3 m
Level 3
A van travels 20 km in 5r minutes. How far will it travel in 2 hours?
3 m
Level 3
Tap A can fill up a tank in 2 hours. Tap B can fill up the same tank in 6 hours. How long will it take to fill up the tank if both taps are turned on at the same time? Express the answer(s) in h.
3 m