Mathematics

Two groups of male students cast their votes on a particular proposal. The result are…

Two groups of male students cast their votes on a particular proposal. The result are as follows:

 In favorAgainst
Group A12832
Group B9648

If a student in favor of the proposal is selected for a post, what is the probability that he is from group A?

  • A.
    8/19
  • B.
    16/35
  • C.
    10/19
  • D.
    4/7
  • E.
    4/5
Correct Answer: Option A
Explanation

Probability that a student in favor is group A

= (frac{128}{128 + 32 + 96 + 48})

= (frac{128}{304})

= (frac{8}{19})