John walking at 4 Kmph reaches his office 8 minutes late. If he walks at 6 Kmph, he reaches there 11 minutes earlier. How far is the office from his house?
Choose the correct choice from the following choices:	A) 3 4/5 Km	B) 3 1/5 Km	C) 4 1/5 Km	D) 5 1/5 Km	E) None
Formula = S1*S2/S2-S1 * T1+T2/60   = 4*6/2 * 19/6   = 24/2 * 19/60   = 19/5 = 3 4/5 Km   3 4/5 Km
<result>A</result>
John walking at 4 Kmph reaches his office 8 minutes late. If he walks at 6 Kmph, he reaches there 11 minutes earlier. How far is the office from his house?