Level 3
Kay and Nelly had to finish the same number of worksheets. Kay did 9 worksheets per day. Nelly did 6 worksheets per day. When Kay finished doing all the worksheets, Nelly still had 21 more worksheets to do.
How many days did Kay take to finish all her worksheets?
Level 2
One ticket to the SEA games sports match was sold at $8. To promote the event, 3 tickets were given free for 20 tickets purchased. If John wanted to buy 46 tickets in all, what was the least amount of money he had to spend?