The weights of 4 boxes are 80, 60, 90 and 70 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of theseÂ boxes?

The weights of 4 boxes are 80, 60, 90 and 70 kilograms. Which of the f

1.	The weights of 4 boxes are 80, 60, 90 and 70 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of theseÂ boxes?
A.	300
B.	230
C.	220
D.	290
Answer» E.