I have 7.5 quarts of fluid that needs changed; however, the fluid can only be removed and replaced 2.5 quarts at a time. How many 2.5 quart changes do I need to make to have 80% or more new fluid?

Number of times to change fluid = 3

Step-by-step explanation:

The amount of fluid that needs to be changed is 7.5 quarts.

The fluid can only be removed and replaced 2.5 quarts at a time.

How many 2.5 quart changes do we need to have 80% or more new fluid?

Lets first find out the 80% amount of the fluid that needs to be changed.

80% amount of fluid = 0.80*7.5

80% amount of fluid = 6 quarts

Now let us find out the number of times required to change the fluid.

Number of times = 6 quarts/2.5 quarts

Number of times = 2.4

We cannot have number of times in fraction so we can either go with 2 times or 3 times, since 2 times is not enough to make 80% or more new fluid, we must change the fluid 3 times, therefore the required number of times to change the fluid is

Number of times to change fluid = 3

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.

the answer is c 150

step-by-step explanation: