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    Well I had a maths mock today and it went horrible to say the least. And the first question I was so confident I got right but I walked out and everyone and everyone got different answers to me. So help me please lol

    Question:

    Buses leave for Barford from STop 1 every 20 minutes. Buses leave for Ashby from the same busstop every 24 minutes. The time when they leave together is 7:30. What is the next time they leave together?

    If that's makes sense
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    9:30 - that's the answer so if you got it wrong what did you do? You're essentially just finding the lowest common multiple of the two numbers, which is 120.
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    I found the hcf instead and did a bit of multiplying and ended up with 11:10. Idk it was a 3 mark question so maybe one mark for working? Hopefully😂
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    (Original post by THEgurlxo)
    I found the hcf instead and did a bit of multiplying and ended up with 11:10. Idk it was a 3 mark question so maybe one mark for working? Hopefully😂
    I don't think you'd get a mark because the reasoning is just not right. Do you understand now why you found the lcm and not the hcf?
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    not really? no
 
 
 
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Updated: January 10, 2017
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