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Posted by on Tuesday, September 30, 2008 at 11:00pm.

1st plane flew at 600km/h
15 minutes later.....
2nd plane flew at 700km/h

how long did it take the 2nd plane to overtake the 1st plane?

for my answre, I got 1.75h

Is this correct? The book said it was 1.5

Thanks

  • Math - , Tuesday, September 30, 2008 at 11:17pm

    I got 1.75 hours for the time of the slower plane, but it asked for the time of the faster plane

    15 minutes = .25 hours
    so 1.75 - .25 = 1.5, the answer in your book

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