9000139505

SubArea: 
Statistics
Level: 
A
Project ID: 
9000139505
Accepted: 
1
Clonable: 
0
Easy: 
0
The average mass of twelve oranges is 120g. To this amount we add another six oranges with the average mass 150g. Find the change in the average mass of oranges.
The average mass increases by 10g.
The average mass increases by 8.3g.
The average mass increases by 25g.
The average mass decreases by 8.3g.