maths percentages help Watch

frosty.disguise
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A shop has a sale that offers 20% off of all prices.
On the final day they reduce all sale prices by 25%
Alex buys a hairdryer on the final day.

Work out the overall percentage reduction on the price of the hairdryer.
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Im stuck on this question for my maths homework and i would of thought the answer was 45% but according to my teacher its 40% i was just wondering how you work it out as i have never really understood percentages.
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Lemur14
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(Original post by frosty.disguise)
A shop has a sale that offers 20% off of all prices.
On the final day they reduce all sale prices by 25%
Alex buys a hairdryer on the final day.

Work out the overall percentage reduction on the price of the hairdryer.
---------------------------------------------
Im stuck on this question for my maths homework and i would of thought the answer was 45% but according to my teacher its 40% i was just wondering how you work it out as i have never really understood percentages.
Let's call the initial price X. So what fraction of X is the initial sales price?

Then take that and find the fraction of X that the final sales price is.

Let me know if you need any more hints

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frosty.disguise
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(Original post by Lemur14)
Let's call the initial price X. So what fraction of X is the initial sales price?

Then take that and find the fraction of X that the final sales price is.

Let me know if you need any more hints

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errrrr, more hints please...
Last edited by frosty.disguise; 1 week ago
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Lemur14
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(Original post by frosty.disguise)
errrrr, more hints please...
So let's break it down. If you take the initial price as 100 (since that's easier to work out), then what price is the item in the sale before the final day?

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frosty.disguise
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(Original post by Lemur14)
So let's break it down. If you take the initial price as 100 (since that's easier to work out), then what price is the item in the sale before the final day?

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dont worry i just looked online for how to do it
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