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

Answer 1

To find out how much oil Randi will need for 8 gallons of gas, we can set up a proportion using the given ratio of 5 gallons of gas to 2 gallons of oil.

Let x represent the amount of oil she will need.

5/2 = 8/x

To solve for x, we can cross multiply:

5x = 2 * 8
5x = 16

Dividing both sides by 5, we get:

x = 16/5 = 3.2

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