okay so if:
32 km = 1 liter
then
1200 km = 37.5 liters
if gas prices range from 1.80 - 2.10:
1.80 x 37.5 = least amount she will spend ($67.50 on gas)
1.89 x 37.5 = average amount she will spend ($70.87 on gas)
2.10 x 37.5 = most amount she will spend ($78.75)
On the road trip Myrza will spend anywhere from $67.50 to $78.75 on gas