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Math Help - How long is the real slide?

  1. #1
    Junior Member
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    How long is the real slide?

    There is a map of a funfair drawn to a scale of 2cm to 7m. On the map there is a slide
    6cm long. How long is the real slide?.

    Please help with way of calculation to arrive the answer?

    With thanks

    Alan
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  2. #2
    Newbie
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    So every 2cm equals 7m in real life. If the slide is 6cm long, then the real slide is 21m. How? Well think about it, 2cm goes into 6cm 3 times, and if you look at the scale it will be 7+7+7 giving you 21m.
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  3. #3
    Junior Member PythagorasNeophyte's Avatar
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    First, you have to understand that 2cm on the map represents 7m on the actual ground.

    Therefore: 2cm:7m
    =2cm:700cm
    =1cm:350cm

    Since the slide in the map measures 6cm, (6 X 350)cm = 2100cm
    =21m
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  4. #4
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    Thanks a lot .Greate help
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