Science Bowl Question

πŸ“… NSB Round Robin 2013πŸŽ“ MSπŸ”„ Round 5#️⃣ Question 5❓ TOSS-UPπŸ“ Multiple Choice

E-85, also known as β€œflex-fuel," gets its name from which of the following?

W) It is 85% more efficient than gasoline
X) It is a mixture of 85% gasoline and 15% ethanol
Y) It is a mixture of 85% ethanol and 15% gasoline
Z) It has an equivalent octane rating of 85
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