A man walks at a rate of 10 mph. After every ten miles, he rests for 7 minutes. How much time does he take to walk 50 miles?
Select
A) 300 B) 318 C) 322 D) 328 E) 330
To cover 50 miles the man needs (time) = (distance)/(rate) = 50/10= 
<gadget id="calculator">50/10</gadget>
<output>5</output>
5 hours= 300 minutes. He will also rest 4 times (after 10, 20, 30 and 40 miles), so total resting time = 4*7= 
<gadget id="calculator">4*7</gadget>
<output>28</output>
28 minutes.   Total time= 300 + 28= 
<gadget id="calculator">300 + 28</gadget>
<output>328</output>
328 minutes.   Answer: 328.
<result>D</result>
A man walks at a rate of 10 mph. After every ten miles, he rests for 7 minutes. How much time does he take to walk 50 miles?