SOLUTION: at 6.40p.m. A and B left their offices and drove along the same road to go home. A's office was further away from B's office by 10km. A drove at 70km/h. B drove at 64km/h. what tim
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Question 743722: at 6.40p.m. A and B left their offices and drove along the same road to go home. A's office was further away from B's office by 10km. A drove at 70km/h. B drove at 64km/h. what time will they meet? Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! at 6.40p.m. A and B left their offices and drove along the same road to go home. A's office was further away from B's office by 10km. A drove at 70km/h. B drove at 64km/h. what time will they meet?
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let x=distance from B's office to home
x+10=distance from A's office to home
travel time=distance/speed
70x=64(x+10)
70x=64x+640
6x=640
x=640/6
travel time=(640/6)/64=10/6 hrs or 1 hr and 40 minutes
what time will they meet? 8:20 p.m.
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