9000139501

SubArea: 
Statistics
Level: 
A
Project ID: 
9000139501
Accepted: 
1
Clonable: 
0
Easy: 
1
Ten apples in a box have average mass 200g. We remove one apple of the mass 200g from the box. What is the change in the average mass of the apples from the box?
The average mass of the apples does not change.
The average mass of the apples decreases by 20g.
The average mass of the apples increases by 20g.
There is not enough information to solve this problem.