Tim decides to start selling necklaces he makes.  He uses 10 charms to make each necklace.  Each charm cost $15.  He sells the necklace for $200.  How much profit does he make if he sells 30?
Each necklace cost 10*15=$<T>multiply(10, 15)=150 to make
So he makes a profit of 200-150=$<T>subtract(200, 150)=50 each
So his total profit is 50*30=$<T>multiply(50, 30)=1500
