Question

Plz help me I’m stuck and it’s important

Answer 1

2 50ml bottles

Explanation:

Reading through the question, we have:

For 80mL

`C_1 = \pounds 55`

For 2 50mL bottles.

The cost is calculated by the original cost + half the original cost.

i.e.

`C_2 = \pounds 45 + (1)/(2) * \pounds 45`

`C_2 = \pounds 45 + \pounds 22.5`

`C_2 = \pounds 67.5`

Next, is to calculate the unit price of each.

For 80mL

`C_1 = \pounds 55`

`Unit\ price = 55/80`

`Unit\ price = 0.6875`

For 2 50mL bottles.

`C_2 = \pounds 67.5`

`Unit\ price - 67.5/(2 * 50)`

`Unit\ price = 67.5/100`

`Unit\ price = 0.675`

By comparison, the 2 50mL is the best buy because it has smaller unit price