The ages of edna, ellie and elsa are consecutive integers. the sum of their ages is 111. what are their ages?

Edna is 36; Ellis is 37; and Elsa is 38.

Step-by-step explanation:

Let Edna = x

      Ellie = x + 1

      Elsa = x+2

The ages of Edna + Ellie + Elsa = 111

So x + x + 1 + x + 2 = 3x + 3 = 111, so 3x = 108 which means x = 36

Edna is 36.

Ellie is  37.

Elsa is 38.

(a) the volume of the cone is 20/3 in3

hence, option a is correct.