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A man walks 6 km at 12 km per hour and returns at 10 kilometre per hour find his average speed |
Answer» Distance on way = 6 kmDistance both ways = 6 X 2 = 12 kmFind the time taken on the way there:Time = Distance ÷ SpeedTime = 6/12 = 0.5 hourFind the time needed on the return trip:Time = Distance ÷ SpeedTIme = 6 ÷ 10 = 0.6 hourFind TOTAL time taken:0.5 + 0.6 = 1.1 hourFind the average speed:Speed = Total Distance ÷ Total timeSpeed = 12 ÷ 1.1 = 10.91 km/hourAnswer: 10.91 km/hourʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ᴜ ᴍᴀᴛᴇ |
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