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

Question

asked Sep 3, 2022 53.6k views

1 Answer

Elssar · Answer 1 · 2022-09-07T11:56:02+0000

Answer:

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