Mathematics > Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

Add 8 times x to 2 times x and then subtract 5 from the sum. If x is a positive integer, the result must be an integer multiple of

(A) 2

(B) 5

(C) 8

(D) 10

(E) 15 

正确答案>>>