Problema Solution
Twin brothers, billy and bobby can mow their grandparents lawn together in 83 minutes. billy can mow the lawn by himself in 35 minutes less time than it would take bobby.how long would it take bobby to mow the lawn by himself
Answer provided by our tutors
Let 'x' represent the amount of time it would take Bobby to mow the lawn by himself, then 'x-35' represents the amount of time it would take Billy to mow the lawn by himself. These values can be expressed as:
1/83 = 1/(x-35) + 1/x
x=185.3
So it would take Bobby approximately 185 minutes to mow the grandparents lawn by himself.