5. Marta has collected 42 apples, 60 apricots and 90 cherries. She wants to divide them into identical piles using all of the fruit and then give a pile to some of her friends. What is the largest number of piles she can make?
A 3
B 6
C 10
D 14
E 42
5. B If the fruit in each pile is to be identical, then the number of piles must be a factor of 42, 60 and 90 . The highest common factor of these numbers is 6 , so this is the largest number of piles possible.