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i got this question from a teacher and i am no good at percentages and was hoping someone could tell me how to do it. so here's the question Steffi buys a new motorbike and puts her old bike up for sale for £380, at the beginning of each week she will reduce the price by 15% and rounds it up to the nearest £10

.Steffi finally sells the bike for £170. During which week did she sell it?

if you could answer it you will be amazing, if you can help me you will still be great


plz and thank you
 May 22, 2012
 #1
avatar+3146 
0
[input]380[/input]
[input]10*round((380-15%)/10)[/input]
[input]10*round((320-15%)/10)[/input]
[input]10*round((270-15%)/10)[/input]
[input]10*round((230-15%)/10)[/input]
[input]10*round((200-15%)/10)[/input]
 May 22, 2012

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