Bunuel wrote:

How much ice cream is left in a certain tub?

(1) The ice cream tub is currently 1/3 as full as it was this morning.

(2) If the amount currently in the ice cream tub were to triple, the ice cream tub would be as full as it was this morning.

Required: How much ice cream is left in a certain tub

Statement 1: The ice cream tub is currently 1/3 as full as it was this morning

We do not know about the level of the tub in the morning. Hence we cannot say how much ice cream is left

INSUFFICIENT

Statement 2: If the current amount is trippled, then the tub will be as full as it was in the morning.

Again we know nothing about the relation between the ice crease level in the morning and the capacity of the tub.

INSUFFCIENT

Statement 1 and Statement 2:

Still we do not know anything about the total volume of the tub.

INSUFFICIENT

Option E