Question

Keira buys a dress for £30 in a sale. It was advertised as 25% off. Keira says "25% of
£30 is £7.50, so I saved £7.50." Explain why she is wrong, and show that she has
actually saved £IO!

Answer 1

Answer:

Keira was wrong because actually discount was on £40 and not £30 it is explained below

Step-by-step explanation:

$x \: - \frac{25}{100} x = 30 \\ or \: \frac{4x - x}{4} = 30 \\ or \: 3x = 30 \times 4 \\ or \: 3x = 120 \\ or \: x = \frac{120}{3} \\ or \: x = 40$

£40 was the actual selling price but Keira brought it for £30 so she saved £40 - £30 = £10

hope this helps please mark me BRAINLIST.

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