SOLUTION: A boy has a liter of 95% octane gas. He wanted to increase the concentration to 96% octane so that his motorbike would run better. How much of pure octane gas should he add?

Question 1005269: A boy has a liter of 95% octane gas. He wanted to increase the concentration to 96% octane so that his motorbike would run better. How much of pure octane gas should he add?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A boy has a liter of 95% octane gas.
He wanted to increase the concentration to 96% octane so that his motorbike would run better.
How much of pure octane gas should he add?
We can avoid fractions if we use Milli-liters: 1 liter = 1000 ml
:
Let x = amt of 100% octane gas required to accomplish this
.95(1000) + x = .96(x + 1000)
950 + x = .96x + 960
x - .96x = 960 - 950
.04x = 10
x = 10/.04
x = 250 ml or of a liter
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