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P / S = 1 / 12
S = 12P .......... (i)

If : S -> S+36
Then : (S+36) = 16P ........ (ii)

From (i) and (ii)
S + 36 = 16S/12
3S + 108 = 4S
S = 108

New number of students at the college = S + 36 = 108 + 36 = 144

Answer: D
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Bunuel
The ratio of professors to students at a private college is 1 :12. If 36 new students are admitted, there will be 16 times as many students as professors. What is the new number of students at the college?

A. 124
B. 132
C. 136
D. 144
E. 148

Solution


    • Let us assume that currently there are p professor and 12p students in the college, respectively.
    • If 36 new students are admitted,
      o The new number of students = 12p + 36
      o Now, 12p +36 = 16p
        ⟹ 4p = 36
        ⟹ 12p = 3*36
        ⟹ 12p + 36 = 108 + 36 = 144
    • Therefore, new number of students in the college = 144
Thus, the correct answer is Option D.
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