Question

You went to the supermarket and bought 27 liters of milk and 45 loaves of bread for a total of $99. A month later, you bought 12 liters of milk and 12 loaves of bread at the same prices, for a total of $30. What is the price of a gallon of milk?

Answer 1

`the \: price \: of \: a \: gallon \: \: of \: milk \: \\ will \: cost \: 4.73 \: dolars`

Explanation:

`if \: a \: gallon \: of \: milk = 3.78541 \: liters \\ 12 \: liters \: will \: cost \: 15 \: dolars \\ 3.78541 \: liters \: will \: cost : \\ (3.78541 \: liters * 15dolars)/(12 \: liters) = 4.7317625 \: dolars`