A fuel has an octane rating of 67. What percentage of MTBE (octane rating 116) must be mixed with this fuel to bring the overall rating of the fuel to 87?

Question

Quizplus · Accepted Answer

Let x be the percentage of MTBE to be added. Then, we have the equation:
0.67(100-x) + 1.16x = 0.87(100)
Simplifying and solving for x, we get:
x = 41%
Therefore, choice C is the correct answer as 41% of MTBE must be mixed with the fuel to bring the overall rating to 87.

A Fuel Has an Octane Rating of 67