SOLUTION: Please I need help ASAP!!!! I'm not that good with word problem? A wheel makes 7(7/15)revolutions per minutes. If it rotates for 39 minutes, how many revolutions does it make?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Please I need help ASAP!!!! I'm not that good with word problem? A wheel makes 7(7/15)revolutions per minutes. If it rotates for 39 minutes, how many revolutions does it make?      Log On


   

Question 876962: Please I need help ASAP!!!! I'm not that good with word problem?

A wheel makes 7(7/15)revolutions per minutes. If it rotates for 39 minutes, how many revolutions does it make? (Simplify your answer. Type a whole number, proper fraction, or mixed numbers?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The wheel makes +7+%2B+7%2F15+ revolution in 1 minute
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In just words:
( revs / min ) x ( min ) = revs
Notice the minutes cancel, leaving you with revs
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First:
+7%2A+%28+15%2F15+%29+=+105%2F15+
and
+105%2F15+%2B+7%2F15+=+112%2F15+
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+%28+112%2F15+%29%2A39+=+4368+%2F+15+
+4368+%2F+15+=+291.2+
There are 291.2 revolutions in 39 min