A man covers a certain distance A in a train. If the train moved 4km/hr faster, it would take 30 min less. If it moved 2km/hr slower, it would take 20 mins more. Find the distance? Choose the correct choice from the following choices.
A) 200 km  B) 50 km  C) 20 km  D) 60 km  E) 80 km
Not really. When you solve the 2 equation above, you get,   6T-4/3 = 5R/6 from simplifying equation 1   4T-2=R/2 from simplifying equation 2   You can now multiply equation 2 by 5 to get   5(4T-2=R/2 ) = 20T-10=5R/2 and then subtract this new equation from equation 1 to get T=3, followed by R=20 to give you distance A= R*T=20*3= 
<gadget id="calculator">20*3</gadget>
<output>60</output>
60 km.60 km
<result>D</result>
A man covers a certain distance A in a train. If the train moved 4km/hr faster, it would take 30 min less. If it moved 2km/hr slower, it would take 20 mins more. Find the distance?