The distance between a gym and a pharmacy is approximately 1.2 x 10^5 inches. Which of the following is closest to the distance between the gym and a pharmacy, in kilometers? (1 kilometer is approximately 3.9 x 10^4 inches.)	Choose the correct choice from the following answers
A) 3.1
B) 3.9
C) 3.7
D) 4.2
E) 4.8
We know that 1 kilometer = 3.9x10^4 inches. Therefore, we now have a ratio of (1 kilometer/3.9x10^4 inches).   We also know that the distance between the gym and a pharmacy is approximately 1.2 x 10^5 inches. To convert inches to kilometers, we need to multiply 1.2 x 10^5 inches by the ratio we just found out.   kilometers = 1.2 x 10^5 inches x (1 kilometer/3.9x10^4 inches) [note: "inches" cancel out, leaving us with just km]   km = 1.2 x 10^5/3.9x10^4 km   km = 3.08 = 3.1 km   Therefore, we can see that the closest answer is 3.1.
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The distance between a gym and a pharmacy is approximately 1.2 x 10^5 inches. Which of the following is closest to the distance between the gym and a pharmacy, in kilometers? (1 kilometer is approximately 3.9 x 10^4 inches.)