Kim can walk 4 kilometers in one hour. How long does it take Kim to walk 18 kilometers? Answers:
A) 2 hours and 30 minutes.
B) 6 hours and 30 minutes.
C) 5 hours and 30 minutes.
D) 3 hours and 30 minutes.
E) 4 hours and 30 minutes.
The time it takes Kim to walk 18 kilometers is equal to     18 / 4= 
<gadget id="calculator">  18 / 4</gadget>
<output>9/2 = around 4.5</output>
4.5 hours= 4 hours + 0.5 ? 60 minutes   = 4 hours and 30 minutes.   correct answer 4 hours and 30 minutes.
<result>E</result>
Kim can walk 4 kilometers in one hour. How long does it take Kim to walk 18 kilometers?