Randy can buy 6 gallons of gas for $18 or 7 gallons of gas for $21. How much do you think he would pay for 8 gallons of gas?

Question

I really need help plus it would be the best thing if you help me .

Answer 1

In both examples, the cost of gas is $3/gallon

$18/6 = $3/gallon and $21/7 = $3/gallon

So,

for 8 gallons of gas x $3/gallon = $24