Brandon has 3 inventions, one saves 30 percent on fuel; a second saves 45% a third saves 25%. If he uses all three inventions at once, what percent can he save on fuel?
do I add all of the percentages together and divide by 3?
=1/3 or 3%? or is it 100%?
If he uses all 3 inventions he spends
(1-0.30)(1-0.45)(1-0.25)100%=28.875% of fuel. Therefore, 100-28.875=71.125% he can save.
thank you so much!
To calculate the total percentage of fuel saved when using all three inventions together, you need to consider how much fuel each invention saves individually.
First, let's convert the percentages to decimals by dividing each percentage by 100:
- The first invention saves 30% of fuel, which is 30/100 = 0.30.
- The second invention saves 45% of fuel, which is 45/100 = 0.45.
- The third invention saves 25% of fuel, which is 25/100 = 0.25.
Next, add up the decimals representing the fuel saved by each invention:
0.30 + 0.45 + 0.25 = 1.00
The sum of the fuel saved by the three inventions is equal to 1.00, which represents 100% of the fuel. This means that when using all three inventions together, Brandon can save 100% of the fuel.
Note that if the total percentage of fuel saved were less than 100%, it would mean that the inventions are not saving fuel as effectively as if they were used individually. However, in this case, the combined fuel savings is 100%.