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Math Help - setting up conversions...

  1. #1
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    Post setting up conversions...

    .One has tires with 16IN radii on their car and drove it at a constant speed of 24 mph, how far would you have actually gone in 20 min?

    I know i have convert b/t hr and min...really just not sure how to start or set up this one.
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  2. #2
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    Hello Brndo4u
    Quote Originally Posted by Brndo4u View Post
    .One has tires with 16IN radii on their car and drove it at a constant speed of 24 mph, how far would you have actually gone in 20 min?

    I know i have convert b/t hr and min...really just not sure how to start or set up this one.
    Am I not understanding the question properly? What has the size of the tyres to do with anything?

    In 20 minutes at 24 mph you travel \tfrac13 of 24 = 8 miles.

    Grandad
    Last edited by Grandad; February 17th 2010 at 11:08 PM. Reason: Correction to calculation
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  3. #3
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    Quote Originally Posted by Brndo4u View Post
    .One has tires with 16IN radii on their car and drove it at a constant speed of 24 mph, how far would you have actually gone in 20 min?

    I know i have convert b/t hr and min...really just not sure how to start or set up this one.
    In this problem the 16 inch tires are irrelevant. What matters is that you are going 24 mph for 20 minutes.
    24 miles per 60 minutes divided 60=.4 miles per minute
    .4 miles per minute times 20 minutes = 8 miles driven
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  4. #4
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    Quote Originally Posted by Grandad View Post
    Hello Brndo4uAm I not understanding the question properly? What has the size of the tyres to do with anything?

    In 20 minutes at 24 mph you travel \tfrac13 of 24 = 6 miles.

    Grandad
    Hey, Granddad. A senior moment? I make that 8 miles.

    'Tis OK. I started off here with a big goof up.
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  5. #5
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    Hello Diagonal
    Quote Originally Posted by Diagonal View Post
    Hey, Granddad. A senior moment? I make that 8 miles.

    'Tis OK. I started off here with a big goof up.
    You're right! A senior moment indeed! I've corrected it now, but thanks for pointing it out.

    Grandad
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