Tommy can paint a fence in 9 hours. If his friend Huck​ helps, they can paint the fence in 1 hour. How fast could Huck paint the fence by​ himself?

Question

Tommy can paint a fence in 9 hours.

If his friend Huck​ helps, they can paint the fence in 1 hour.

How fast could Huck paint the fence by​ himself?

Answer 1

H represents the amount of time Huck needs working alone

1 / H + 1 / 9 = 1

Can you solve for H and answer?