two buses start from the same time in opposite directions. their speed are 50 km/hr and 60 km/hr respectively. after how long they will be 440 km apart.
Answers
Answered by
21
Since they started travelling in opposite direction then relative speed will be (50+60) = 110 km/h
Distance be 440 k m
Time = distance/speed
= 440/110 = 4 hours
Answered by
12
Answer: After 4 hours they are 440 km apart.
Step-by-step explanation:
Let after t hours the buses are apart 440 km,
Since, the speed of first bus = 50 km/h
⇒ The distance covered by first bus in t hours = 50 t ( Distance = speed × time)
And, the speed of second bus = 60 km/h
⇒ The distance covered by second bus = 60 t
Thus, if they are 440 km apart after t hours
⇒ 50 t + 60 t = 440
⇒ 110 t = 440
⇒ t = 4
Hence, after 4 hours they are 440 km apart.
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