<h2>Hello!</h2>
The answer is:
It will take 42.35 minutes to weed the garden together.
<h2>Why?</h2>To solve the problem, we need to use the given information about the rate for both Laura and her husband. We know that she can weed the garden in 1 hour and 20 minutes (80 minutes) and her husband can weed it in 1 hour and 30 minutes (90 minutes), so we need to combine both's work and calculate how much time it will take to weed the garden together.
So, calculating we have:
Laura's rate:
Husband's rate:
Now, writing the equation we have:
Hence, we have that it will take 42.35 minutes to weed the garden working together.
Have a nice day!