Two bus stations are 600 km apart. if two separate buses depart from both stations and travel towards each other, at what time will they meet each other, given that the first bus left at 12 p.m. and travels at a speed of 60 kmph while the second bus left at 1 p.m. and travels at a speed of 40 kmph.
Choose the correct option.
A) 2.40 p.m.
B) 8.40 p.m.
C) 5.40 p.m.
D) 7.40 p.m.
E) 6.40 p.m.
Suppose they meet x hours after 12 p.m.   Distance moved by first bus in x hours + distance moved by 2nd bus in x-1 hrs = 600   60x+40(x-1) =600   60x+40x-40= 600   100x= 640   x = 6.4   So they meet 6.4 hr after 12 p.m. which is at 6.40 p.m.   Answer is 6.40 p.m.
<result>E</result>
Two bus stations are 600 km apart. if two separate buses depart from both stations and travel towards each other, at what time will they meet each other, given that the first bus left at 12 p.m. and travels at a speed of 60 kmph while the second bus left at 1 p.m. and travels at a speed of 40 kmph.