10 students enter into a class after A and 15 students before B. Also, 5 student

Question

10 students enter into a class after A and 15 students before B. Also, 5 students enter between A and B. How many students are there in total if A entered before B?

Options:

A . 10

B . 5

C . 15

D . 20

Answer: Option D
:
D
A enters before B. 15 students before B including the 5 between and A. Therefore total 9+A+5+B+4=20

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