If the remainder is 16 when the integer n is divided by 30, what is the remainder when 2n is divided by 15?  Choose the most appropriate option
A) 0
B) 2
C) 4
D) 6
E) 8

Rationale: n = 30 k + 16 2 n = 2 ( 30 k + 16 ) = 4 k * 15 + 32 = 4 k * 15 + 2 * 15 + 2 = 15 j + 2 the answer is b .
Answer: B