Question

Mrs. Jones had 27 pencils for her students to use. She decided it was time to get more, and so she went to the office supply store and bought some. She now has 53 pencils for her students to use.

Which of the following number sentences can be used to find n, the number of pencils Mrs. Jones bought at the office supply store?
A. 27 + 53 = n
B. n - 27 = 53
C. 27 + n = 53
D. 27 × n = 53