Dara has 32 marbles in her collection and matthew has 48 marbles in his collection. dara and matthew went to the store to buy more marbles. they each bought 16 more marbles. who made the greatest percent increase to their collection?

What is the lcm of 16 and 40 ? 24 and 40 ?

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.