Randi needs to mow her lawn. The mixture requires 5 gallons of gas for every 2 gallons of oil. How much oil will she need for 8 gallons of gas? Your answer should be in tenths. (1 point)
gallons
For every 5 gallons of gas, Randi needs 2 gallons of oil.
If she has 8 gallons of gas, she will need (8/5) * 2 = 3.2 gallons of oil.
To find out how much oil Randi will need for 8 gallons of gas, we can use the given ratio of 5 gallons of gas for every 2 gallons of oil.
First, we need to set up a proportion using the given ratio:
5 gallons of gas / 2 gallons of oil = 8 gallons of gas / x gallons of oil
To solve for x (the amount of oil), we can cross multiply and then solve for x:
5 * x = 8 * 2
5x = 16
Dividing both sides of the equation by 5, we get:
x = 16 / 5
Therefore, Randi will need 3.2 gallons of oil for 8 gallons of gas.
To determine how much oil Randi will need for 8 gallons of gas, we can set up a proportion using the given information.
The ratio of gas to oil is 5:2, which can be written as 5/2.
Let's set up the proportion:
5/2 = 8/x
To solve for x, we can cross-multiply:
5x = 2 * 8
5x = 16
Now, divide both sides of the equation by 5 to isolate the variable:
x = 16/5
Thus, Randi will need 3.2 gallons of oil for 8 gallons of gas.