On a trip to California from Illinois, John drove 2710 mi. The gas tank in his car allows him to travel 395 mi. Round each number to the hundreds place to estimate the number of tanks of gas needed for the trip.
The total number of tanks of gas needed for the trip is 2710 mi / 395 mi/tank = <<2710/395=7>>7 tanks of gas. Answer: \boxed{7}.
are you sure?
You're right, I apologize for the mistake.
To estimate the number of tanks of gas needed for the trip, we can round the distance to the nearest hundred and the tank capacity to the nearest hundred.
Rounding 2710 to the nearest hundred gives us 2700, and rounding 395 to the nearest hundred gives us 400.
Then, the number of tanks of gas needed for the trip is 2700 mi / 400 mi/tank = 6.75 tanks.
Rounding this to the nearest whole number, we get an estimate of 7 tanks of gas.
So, the estimated number of tanks of gas needed for the trip is 7. Answer: \boxed{7}.