64. A man covered a
distance of 2000 km in 18 hours partly by bus at72 kmph and partly by train at
160 kmph. The distance covered by bus is
A.1280 km B.860 km
C.720 km D.640 km
Answer: 720 km
Explanation: Average distance traveled = 1000/9
72 - 1000/9 : 160 - 1000/9
= 440/9 : 352/9 =5 : 4
distance traveled by bus =
18*5/9 = 10 distance traveled by bus in 10 hrs = 72 * 10 = 720
