Thursday 26 March 2020

The speed Q4 (Xuan Han)

x = 25 and y = 130

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2 comments:

  1. Anonymous26 March 2020 at 17:12

    I don't know how to post a new post so im just gonna post as a comment. By Kang Ming: x = 76 and y = 52
    total time taken = 6hrs
    60km/h x 6h = 360km
    total distance travelled = 360km
    first part(distance travelled) = 4xkm
    second part(distance travelled) = 2ykm
    4xkm + 2ykm = 360km
    4xkm = 360km-2ykm
    x = 90km-(1/2)ykm
    possible value:
    let y be 50
    xkm = 90-25km
    = 65km

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  2. Anonymous26 March 2020 at 18:04

    Well I can post but sadly don't have a phone and I'm unable to take a photo so I'm also posting it as a comment. Yay.
    Total time= 4h+2h=6h
    Total Distance= 6h x 60km/h=360km
    Two values= 160km and 200km
    x km= 200km / 4=50km
    y km= 160km / 2 =80km

    Answer:x=50, y=80

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