Vyshak wrote:

Let the number of doctorate students be = x = ?

PhD(non biz) = 0.35x

Number of students who have a masters degree = 45

St1: 0.35x = 35 --> x = 100

Sufficient

St2: 45 = 0.45x --> x = 100

Sufficient

Answer: D

I think there's a problem with your St2 explanation.

"45% have master degree as their highest degree" should mean that the PhD, MD percentage is 55%, 45% respectively (assume that there are only 2 types of admitted students).

So, let z be the total number of admitted students, then we have 0.45z = 45

=> z= 100

=> number of PhD = 0.55 x 100 = 55

It would be a better explanation.

Cheers

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