SOLUTION: Twin​ brothers, Andy and​ Brian, can mow their​ grandparent's lawn together in 56 minutes. Brian could mow the lawn by himself in 15 minutes more than it would take Andy. Ho

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Twin​ brothers, Andy and​ Brian, can mow their​ grandparent's lawn together in 56 minutes. Brian could mow the lawn by himself in 15 minutes more than it would take Andy. Ho      Log On


   

Question 1140220: Twin​ brothers, Andy and​ Brian, can mow their​ grandparent's lawn together in 56 minutes. Brian could mow the lawn by himself in 15 minutes more than it would take Andy. How long would it take each person to mow the lawn​ alone?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
1%2Fx%2B1%2F%28x%2B15%29=1%2F56
Solve for x, which is Andy's time if mowing by himself.