Respuesta :

Let's identify first what informations were given in the scenario:

What is Given: Rich works: 140 hours in a month.

What is being asked: How many hours he work in 3/4 of a month​?

To be able to determine how many hours did Rich works in 3/4 of a month, we generate this equation:

[tex]Rich^{\prime}s\text{ work hours in 3/4 month = (Work hours in a month)(3/4)}[/tex][tex]\text{ = (140)(3/4) = }\frac{140\text{ x 3}}{4}[/tex][tex]\text{ = }\frac{420}{4}[/tex][tex]\text{Rich's work hours in 3/4 month = 105 hours}[/tex]

Therefore, Rich works 105 hours in 3/4 of a month​.