I'm supposed to figure out how much feul is wasted by a that car runs at 25% efficiency that each year uses 119,700 gallons of gas. Would it be 10,500 gallons.
I'm from Tabetha's class, and wanted to look at her Jiskha message, but that didn't help. I tried searching for this, but it's too specific to find in a google search. Its something that requires a real, live human. Thanks for your understanding.
The way I see it is that if 25% is wasted, then 119,700 gallons represents 0.75 of the value.
Or 119,700/0.75 = Gallons used at 100% efficiency. The difference is the amount of fuel wasted.
To determine the amount of fuel wasted by a car that runs at 25% efficiency, we need to calculate the fuel consumption of the car at its given efficiency and compare it to the actual fuel usage.
First, we need to find the fuel consumption of the car running at 25% efficiency. Efficiency is calculated by dividing the useful output by the total input. In this case, the useful output is the distance traveled, while the total input is the amount of fuel.
If the car uses 119,700 gallons of gas per year, then the total input (in gallons) is 119,700.
To find the amount of fuel that should have been used at 25% efficiency, we divide the total input by the efficiency percentage:
Fuel consumption = Total input / Efficiency percentage
Fuel consumption = 119,700 / 0.25
Fuel consumption = 478,800 gallons
Now, to find the amount of fuel wasted, we subtract the actual fuel usage from the fuel consumption at 25% efficiency:
Fuel wasted = Fuel consumption at 25% efficiency - Actual fuel usage
Fuel wasted = 478,800 - 119,700
Fuel wasted = 359,100 gallons
Therefore, the correct amount of fuel wasted by the car running at 25% efficiency is 359,100 gallons, not 10,500 gallons.