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 the tenths

1 answer

To find the amount of oil needed, we can set up a proportion:

5 gallons of gas / 2 gallons of oil = 8 gallons of gas / x gallons of oil

Cross-multiplying, we have:

5x = 8 * 2
5x = 16

Dividing both sides by 5, we get:

x = 16/5 = 3.2 gallons of oil

Therefore, Randi will need 3.2 gallons of oil for 8 gallons of gas.