Question

A supermarket sells branded mineral water in a pack of 8 x 500ml for $1.99 and its own brand mineral water in packs of 6 x 500ml for $1.40. Explain why the own brand is cheaper per bottle.

Answer 1

The own brand mineral water is cheaper per bottle because its cost per bottle ($0.233333) is less than the cost per bottle of the branded mineral water ($0.24875).

Step-by-step explanation:

To determine why the own brand mineral water is cheaper per bottle compared to the branded mineral water, we need to calculate the cost per bottle for each option. The branded mineral water sells for $1.99 for a pack of 8 x 500ml bottles, and the own brand mineral water sells for $1.40 for a pack of 6 x 500ml bottles.

For the branded water:

• Price per bottle = Total price / Number of bottles
• Price per bottle = $1.99 / 8 bottles = $0.24875 per bottle

For the own brand water:

• Price per bottle = Total price / Number of bottles
• Price per bottle = $1.40 / 6 bottles = $0.233333 per bottle

When we compare these prices, the own brand water costs $0.233333 per bottle, which is less than the branded water that costs $0.24875 per bottle. Thus, the supermarket's own brand is cheaper per bottle.