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anonymous

  • one year ago

Grant can row 6 miles in 36 minutes. Arianna can row 3,520 yards in 20 minutes. In miles per hour, how much faster does Grant row than Arianna?

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  1. anonymous
    • one year ago
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    1 mile is 1760yds Grant's speed is \[\frac{ 1mile }{ 1\min }\]

  2. anonymous
    • one year ago
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    okay

  3. anonymous
    • one year ago
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    3520yd divide by 1760yd you get 2miles

  4. anonymous
    • one year ago
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    so arianna's speed is \[\frac{ 1mile }{ 10mins } = \frac{ 0.1mile }{ 1\min }\]

  5. anonymous
    • one year ago
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    okay

  6. anonymous
    • one year ago
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    would equal up to be 29.3

  7. anonymous
    • one year ago
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    so we convert them mile/min to mph

  8. anonymous
    • one year ago
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    okay

  9. anonymous
    • one year ago
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    multiple both grant and arianna speed by 60 to get the units to mile per hour. Then: Grant's speed - Arianna's speed

  10. anonymous
    • one year ago
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    I got 29.3 for Arianna

  11. anonymous
    • one year ago
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    What's your calculation steps?

  12. anonymous
    • one year ago
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    5.156.8

  13. anonymous
    • one year ago
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    No... Arianna's speed is in yards, you need to convert it to miles

  14. anonymous
    • one year ago
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    so convert 29.3 to yards

  15. anonymous
    • one year ago
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    I meant mile

  16. anonymous
    • one year ago
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    Arianna row 3520 yards in 20mins 1 mile is 1760 yards \[\frac{ 3520yd }{ 1760yd } = 2 miles\]

  17. anonymous
    • one year ago
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    okay

  18. anonymous
    • one year ago
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    6195200

  19. anonymous
    • one year ago
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    \[\frac{ 2miles }{ 20mins } = \frac{ 1mile }{ 10mins } = \frac{ 0.1miles }{ 1\min }\]

  20. anonymous
    • one year ago
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    40

  21. anonymous
    • one year ago
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    40?

  22. anonymous
    • one year ago
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    I got 40 somehow

  23. anonymous
    • one year ago
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    ok we have both Grant and Arianna speed in miles per min (check the working above) now we convert them to miles per hour

  24. anonymous
    • one year ago
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    okay

  25. anonymous
    • one year ago
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    Think I made a typo the top again....at Grant's speed should be \[\frac{ 0.1667miles }{ 1\min }\]

  26. anonymous
    • one year ago
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    Multiply Grant's speed by 60 you should get 10miles per hour Multiply Arianna's speed by 60 you should get 6miles per hour

  27. anonymous
    • one year ago
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    okay

  28. anonymous
    • one year ago
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    10-6=4 which is the answer

  29. anonymous
    • one year ago
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    okay

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