math
posted by Anonymous .
A motorcyclist used 3.21 liters of gasoline to travel from Greenfield to Milltown. The next day he traveled from Milltown to New Haven, using another 1.95 liters of gasoline. About how much gas did he use on the two trips?
a:about 4 liters
b:about 3 liters
c:about 5 liters
d:about 6 liters
C?

Right.