Question

In a box there are 18 balls of different weights. The average weight of all the balls in the box is 60 gm and weight of the box is 20% more than the weight of the
lightest ball in the box. If the lightest ball is removed from the box, then the box weights 1088 gm. What is the weight of the box?
40 gm
48 gm
52 gm
56 gm

Answer 1

I think this can be achieved in 2 steps. Let us give name to each ball B1 B2 B3 B4 B5 B6 B7 B8 B9 Now we will divide all the balls into 3 groups.