SOLUTION: TWINS, DANIEL AND GRACE, TAKE TURNS MOWING THE LAWN. LAST WEEK GRACE MOWED THE LAWN IN 45 MINUTES, THIS WEEK DANIEL MOWED THE LAWN IN 40 MINUTES. WHAT IS THE AVERAGE MOWING RATE PE

Question 906033: TWINS, DANIEL AND GRACE, TAKE TURNS MOWING THE LAWN. LAST WEEK GRACE MOWED THE LAWN IN 45 MINUTES, THIS WEEK DANIEL MOWED THE LAWN IN 40 MINUTES. WHAT IS THE AVERAGE MOWING RATE PER HOUR PER TWIN
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Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Daniel's rate is:
( 1 lawn ) / ( 40 min ) =
Grace's rate is:
( 1 lawn ) / ( 45 min ) =
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You need the rate per hour, or min, so
Daniel's rate:

Daniel's rate is 1.5 lawns /hour
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Grace's rate:

Grace's rate is 4/3 lawns / hour