Level 3
Izzat has just enough money to buy 3 bracelets at $12 each. If she does not buy the bracelets, she can buy 4 necklaces with the same amount of money. How much does each necklace cost?
Level 3
Some adults were at a concert. After 664 women and 2755 men left the concert hall, there were 521 adults left. How many adults were there at the concert hall at first?