SOLUTION: Twin brothers, Billy and Bobby, can mow their grandparent's lawn together in 65 minutes. Billy could mow the lawn by himself in 25 minutes less time that it would take Bobby. How

Question 1102707: Twin brothers, Billy and Bobby, can mow their grandparent's lawn together in 65 minutes. Billy could mow the lawn by himself in 25 minutes less time that it would take Bobby. How long would it take Bobby to mow the lawn by himself?
Answer by ikleyn(52908) (Show Source): You can put this solution on YOUR website!
.

Let x = "How long would it take Bobby to mow the lawn by himself", in minutes.


Then your equation is

 +  = .

For details and many other similar solved problems of this type see the lesson
- Using quadratic equations to solve word problems on joint work
in this site.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
- ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lesson is the part of this textbook under the topic
"Rate of work and joint work problems" of the section "Word problems".

Save the link to this online textbook together with its description

Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson

to your archive and use it when it is needed.

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