Answer:
a = 1.5 hours
b = 4.5 hours
Explanation:
If you want to find how many hours for 1 person it would take to paint a house, you should try multiplying by 1.5.
You see in the question it says 4 people can paint in 6 hours. So let's try 1.5 * 4 and see if we get 6.
It equaled 6 hours.
a = 1.5 hours
b = 4.5 hours
This is your answer!
Hope this helps!