There are two cars. One is 160 miles north of the other. Simultaneously, the car to the north is driven westward at 10 miles per hour and the other car is driven eastward at 30 miles per hour. How many miles apart are the cars after 3 hours?  Choose the most appropriate option.
A) 180	B) 200	C) 220	D) 240	E) 250
Here, drawing a quick sketch of the 'actions' described will end in a diagonal line that you canbuilda right triangle around:   The right triangle will have a base of 120 and a height of 160. The hidden pattern here is a 3/4/5 right triangle (the 120 lines up with the '3' and the 160 lines up with the '4'). In this way, you can deduce that each side is '40 times' bigger than it's corresponding side:   3/4/5 becomes   120/160/200   Thus the distance between the two cars is the length of the hypotenuse of this larger right triangle...   Final Answer:   200
<result>B</result>
There are two cars. One is 160 miles north of the other. Simultaneously, the car to the north is driven westward at 10 miles per hour and the other car is driven eastward at 30 miles per hour. How many miles apart are the cars after 3 hours?