Answer:
The leaf blower need 80 ounces of gas for 2 ounces of oil.
Explanation:
The ratio of ounces of gas to ounces of oil = 40:1
Let x be the amount of gas required by leaf blower for 2 ounces of oil
Amount of gas = x
Amount of oil = 2 ounces
Since we are given that ratio of ounces of gas to ounces of oil is 40:1
So,

x=

Hence the leaf blower need 80 ounces of gas for 2 ounces of oil.