A train having a length of 1/4 mile , is traveling at a speed of 75 mph. It enters a tunnel 3 ½ miles long. How long does it take the train to pass through the tunnel from the moment the front enters to the moment the rear emerges?
Choose the correct choice.
A) 3 min	B) 4.2 min	C) 3.4 min	D) 5.5 min	E) 5.7 min
Explanation:   Total distance = 3 ½ + ¼ = 7/2 + ¼ = 15/4 miles   Speed = 75 mph   Time = distance/speed = (15/4) / 75 hr = 1/20 hr = 60/20= 
<gadget id="calculator">60/20</gadget>
<output>3</output>
3 minutes   3 minnswer: Option 3 min
<result>A</result>
A train having a length of 1/4 mile , is traveling at a speed of 75 mph. It enters a tunnel 3 ½ miles long. How long does it take the train to pass through the tunnel from the moment the front enters to the moment the rear emerges?