Hi Maddie,
How about this one for a riddle.
What 8 letter word can have a letter taken away and it still makes a word.
Now take another letter away and it will still make a word.
Keep on taking letters away and leaving a word until there is only one letter left which makes a word.
What is the...
Yes I agree. They paid $18 each in total. Their meal plus a tip for the waiter which equals $54 plus the 3 lots of $2 which were returned to them. So therefore $54 plus $6 equals $60 the original amount.