Three boxes have an average (aithmetic) weight of 7 kilograms and a median weight of 9 kilograms. What is the maximum possible weight, in kilograms, of the lightest box?
A. 1
B. 2
C. 3
D. 4
E. 5
OA: C
Seems simple,
x+y+z=21 and lightest, 9, heaviest --> if heavy one is 10, then lightest is 2. But why it is incorrect?
A. 1
B. 2
C. 3
D. 4
E. 5
OA: C
Seems simple,
x+y+z=21 and lightest, 9, heaviest --> if heavy one is 10, then lightest is 2. But why it is incorrect?
