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Math·Algebra·Systems of two linear equations in two variables

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During a trip, a car traveled a total of 480 miles on city roads and highways and used a total of 16 gallons of gas. The car traveled an average of 28 miles per gallon of gas on city roads and 34 miles per gallon of gas on highways. Which system of equations represents this situation, where $c$ is the number of miles the car traveled on city roads and $h$ is the number of miles the car traveled on highways?

A

$c+h=16$
$\frac{c}{28}+\frac{h}{34}=480$

B

$c+h=16$
$28c+34h=480$

C

$c+h=480$
$\frac{c}{28}+\frac{h}{34}=16$

D

$c+h=480$
$28c+34h=16$