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?
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?
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.