Mary found 16 shells at the beach. She decided to share them equally between herself and her sister. How many shells will Mary and her sister each get?

8 shells.

Step-by-step explanation: 16 divided by 2 equals 8.

3: 2

step-by-step explanation:

shorter piece is 2: 3, so just reverse it, and you get 3: 2

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.