In 1986, her number is 0 + 32 = 32.

Each year after, she has 2 added to her number. So the number of years it will take for the number to reach 70 is (70-32)/2 = 19

The year in which this happens, of course, is 1986 + 19 = 2005.

Answer choice C.

_________________

Are you aiming for a 700+ GMAT score and a top 10 MBA?

If you are, we should talk. I specialize in ambitious students.

$80/hour as of May 2018.

http://www.facebook.com/HanoiGMATtutor

HanoiGMATTutor@gmail.com