Distance between Bholu and Ghulo house is 9 km...Ghulo has to attend Bhulo's bday partyat 7 pm.he started at 6 pm and travelled 6 km in 40 min. on his way he meet his friend Aswin and talked with him for 5 min and reached Bhulo's party at 7 pm. With what speed did he cover the second part of his journey? calculate his avrage speed for the entier journey.
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Answer:
given
total distance = 9 km
distance of 6 km covered in 40 min
talked for 5 min
time elapsed = 40+5 = 45 minutes
time remaining = 60-45 = 15 minutes = 15/60 hour
distance to be covered = 9-6 = 3 km
required speed = 3/(15/60) kmph
= 3*60/15
= 12 kmph
average speed = total distance/total time
= 9/1
= 9 kmph
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