On the basis of results of annual examinations, Lali ranks `27^(th)` in the class, Riya is 7 tanks ahead of Lali. Riya's ranks from the last is `36^(th)`. The number of students in the class is

Options

A. 56
B. 55
C. 60
D. None of these

Answer

B

Explanation

Lali.s rank from start `=27^(th)`. So, Riya.s rank from start= `(27-7)` [`because` Riya is 7 ranks ahead of Lali] Riya.s rank from the last =`36^(th)`.

So, total number of students in the class. `=(20+36)-1=56-1=55`