Question

dev knows he only has 8gallons of gasoline in the tank. he wants to go on a 300- mile trip. will he have to buy more gasoline? also for 4 gallons of gasoline it was 128 miles

Answer 1

yes you will need more gassoline

Answer 2

4 gallons=128
times 2
8 gallons=256

300-256=44

44 miles needed more

find mpg
4gal=128
divide by 4 both sides
1gal=32 miles

44/32=1.375

he needs 1.375 more gallons