500
The driver of Bus #10 bought 6.5 gallons of gas yesterday. The driver of Bus #52 bought 3.1 gallons of gas and the driver of Bus #16 bought 3.7 gallons. Put the Bus Drivers in order from least to greatest by their amount of gas.
What is Bus # 52 (3.1), Bus # 16, (3.7), Bus #10 (6.5)