Question

which is the better buy? a 12 pack of coke for $3.50 or a six pack of coke for $1.80? they are the same the 12 pack of coke the 6 pack of coke neither

Explanation:

Step1: Calculate unit - price of 12 - pack

To find the unit - price of the 12 - pack of Coke, divide the total price by the number of units. The total price of the 12 - pack is $3.50. The unit - price $u_1$ is $u_1=\frac{3.50}{12}\approx0.292$ dollars per unit.

Step2: Calculate unit - price of 6 - pack

The total price of the 6 - pack of Coke is $1.80. The unit - price $u_2$ is $u_2 = \frac{1.80}{6}=0.3$ dollars per unit.

Step3: Compare unit - prices

Since $0.292<0.3$, the 12 - pack has a lower unit - price.

Answer:

The 12 pack of Coke