<PRE><B>Question 464574</B>
    If it takes Steve 5 hours to mow the lawn, and it takes Jane 3 hours to mow the same lawn, how long does it take them to mow the lawn together?
.
Let x = time (hours) it takes for both
then
x(1/5  + 1/3) = 1
multiplying both sides by 15:
x(3  + 5) = 15
x(8)=15
x = 1.875 hours
or
x = 1 hour and 53 minutes

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