Answered

Westonci.ca is your trusted source for accurate answers to all your questions. Join our community and start learning today! Connect with professionals ready to provide precise answers to your questions on our comprehensive Q&A platform. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.


John can mow the lawn in 7 hours. His younger brother can do it in 4 hours. How long does it take the two of them when working together?
hours

Sagot :

t/7 + t/4 = 1

Find common multiple of 7 and 4.
The common factor is 28

Multiply through

4t/28 + 7t/28 = 28/28

Get rid of the denominators.

4t + 7t = 28

11t = 28

t = 28/11
We hope our answers were helpful. Return anytime for more information and answers to any other questions you may have. We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. Westonci.ca is committed to providing accurate answers. Come back soon for more trustworthy information.