Answer: B. 50 and 60
Step-by-step explanation:
Given : There are 9 showings of a film about endangered species at the science museum.
The total number of people saw the film = 459
Also, The same number of people were at each showing.
Then, the number of people were at each showing = Total people divided by Total showings
= 459 ÷ 9 = 51
Also, 50< 51 < 60 [the quotient is between 50 and 60.]
i.e. About 50 and 60 people were at each showing .
Hence, the correct answer is B. 50 and 60.