Which is the better buy?

Question

3 gallons of antifreeze for $10.35 or 12 liters of antifreeze for $10.50

Answer 1

Since both options don't have the same units, you need to first convert one of the options to match the units of the other one.

If you convert gallons to liters on the first option, it would be 11.356 liters of antifreeze. So determining which option is the better buy, the first would cost 91¢ per liter and the second would cost 88¢.

Thus, the second option would be the better buy.