The distance between a sports store and a recreation center is approximately 3.34 x 10^5 inches. Which of the following is closest to the distance between the sports store and a recreation center, in kilometers? (1 kilometer is approximately 3.9 x 10^4 inches.) Options
A) 9.33 B) 8.98 C) 8.56 D) 9.21 E) 9.03
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 sports store and a recreation center is approximately 3.34x10^5 inches. To convert inches to kilometers, we need to multiply 3.34x10^5 inches by the ratio we just found out.   kilometers = 3.34x10^5 inches x (1 kilometer/3.9x10^4 inches) [note: "inches" cancel out, leaving us with just km]   km = 3.34x10^5/3.9x10^4 km   km = 8.56 km   Therefore, we can see that the closest answer is 8.56.
<result>C</result>
The distance between a sports store and a recreation center is approximately 3.34 x 10^5 inches. Which of the following is closest to the distance between the sports store and a recreation center, in kilometers? (1 kilometer is approximately 3.9 x 10^4 inches.)