Randi needs to mow her lawn. The mixture requires 5 gallons of gas for every 2 gallons of oil. How muc oil will she need for 8 gallons of gas? Your answer should be in tenths. (1 point)
To find how much oil is needed for 8 gallons of gas, let's use the ratio given: 5 gallons of gas for every 2 gallons of oil.
So, if we have 8 gallons of gas, we can set up the following proportion:
5 gallons of gas / 2 gallons of oil = 8 gallons of gas / x gallons of oil.
Cross-multiplying, we get: 5 * x = 8 * 2.
Simplifying the equation: 5x = 16.
Dividing both sides by 5, we find: x = 16/5 = 3.2.
Therefore, Randi will need 3.2 gallons of oil for 8 gallons of gas.