Question

Ryan can tar a roof in 15 hours. Stefan can tar the same roof in 11 hours. Find how long it would take them if they worked together.

Answer 1

15+11=26 divided by 2=13

Explanation:

Answer 2

Answer:13 hours

Step-by-step explanation: remember you are averaging so you add the two numbers and divide by the number of numbers, 2. So, 15+11=26, 16 divided by 2=13