Question

10. A house painter can finish a house in 6 hours. His partner can finish the same house in 12 hours. Which of the

Answer 1

The answer is D.9 , you just have to do an average wich is (12+6)÷2 and there you have it

Answer 2

Answer:

I got B. 4 hours.

Step-by-step explanation:

1. Find the unit rate of both painters. So in 1 hour, the painter finishes 1/6 of the house. In 1 hour the partner finishes 1/12th of the house.

2. A completed house equals 1.

3. Putting it all together you get: 1/6+1/12=1. Since we want to know the number of hours, x is in the numerator. Giving x/6 + x/12 =1.

4. Multiply by 12 to get common denominator for the whole equation, you get 2x +x =12. Solve for x you get 4.