Question

Mr. Lee can paint 20 chairs in t hours. He uses 3 liters of paint for every 12 chairs that he painted. How do you find, in terms of t, the number of chairs that he can paint in 3 hours?

Answer 1

See a solution process below:

Explanation:

We can write this equation:

`t" hours" = 20" chairs"`

We can now multiply each side of the equation by `color(red)(3)` to find the number of chairs Mr. Lee can paint in 3 hours if he paints them continuously at the same rate.

`color(red)(3) xx t" hours" = color(red)(3) xx 20" chairs"`

`3t" hours" = 60" chairs"`

Mr. Lee can paint 60 chairs in `3t` hours.