Genetic Algorithm – likely population of parents after roulette-wheel selection

Below is a question from a past paper that I am attempting to understand in preparation for an exam.

Am completely stuck on it. Would appreciate any pointers in the right direction.

How do we go about working about a likely population?

Consider the following population of integer-encoded solutions being manipulated by a standard Genetic Algorithm:

No. Genome Fitness

  1. 26892041 500
  2. 19487534 200
  3. 08495743 100
  4. 48957846 200

(a) Show a likely population of four parents after selection using the roulette-wheel scheme, indicating why.

Slides on Roulette Wheel Selection:

enter image description here

enter image description here