Biannual SHOULD mean twice a year. Every two years is biennial. But my dictionaries say biannual MIGHT also mean every two years. Probably everybody is so confused about the two similar words that they don't know what biannual means.
According to U.S.A. Today âs âWeekend Gas Gauge,â the current average price of regular gasoline is $4.026 per gallon. A year ago the price was $2.945. What I hadnât realized was that the gap between regular gas and premium gas has also increased.Right now, premium gas is 38.5 cents per gallon more expensive than regular gas.A year ago, that gap was 29.5 cents. year ago the price was $2.945. What I hadnât realized was that the gap between regular gas and premium gas has also increased. Right now, premium gas is 38.5 cents per gallon more expensive than regular gas. A year ago, that gap was 29.5 cents.
Here's The Real Difference Between Premium And Regular Gas. EVEN at the cheapest petrol station in your correspondent's neighborhood, filling up the family kidmobile with premium (91 octane) fuel now costs over $70. As the meter clocks up dizzying dollar amounts, he looks longingly at the regular (87 octane) pump. Switching from his vehicleâs recommended premium-grade fuel to the cheaper variety would lower his fuel bill by at least 20 cents a gallon (more than five cents a litre).