Well, their speeds are (

is Jack's speed, and

is Richard's.

They, together, can paint 12 houses in 35 days. To get a single house, we only have to calculate

which is very close to 3 (a bit below)
Equation showing relationships between things you are conparing. An equals sign represents the two expeessions are equal
Answer:
41
Step-by-step explanation:
Jus replace x with 3 and put it in a calculator.
It is actually not 28 because the volume of a cylinder is: pi r^2 x h which in this case is pi x 36 x 4 which equals 452.39 rounded up