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OpenStudy (anonymous):
A washing machine normally selld for $650.
Part A
During a holiday sale, each washing machine is marked down 20%. How much will it cost to buy the washing machine during the sale?
OpenStudy (sleepyjess):
Ok, how do you think you would get the amount that it is off?
OpenStudy (anonymous):
umm im not sure but i know it has to do with markdown like 20% change it to decimal?
OpenStudy (sleepyjess):
Yep, what is 20% as a decimal?
OpenStudy (anonymous):
20% is \[\frac{1}{5}\]
if im getting 20% off, i'd only have to pay
\[\frac{4}{5}\] the original price, how cool is that!
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OpenStudy (anonymous):
0,20
OpenStudy (sleepyjess):
Yes, so 650*.2
OpenStudy (anonymous):
is that all you have to do??
OpenStudy (sleepyjess):
that is the amount off, then 650(original amount) - whatever 650*.2 is
OpenStudy (anonymous):
\[\frac{4}{5} \times 650\]
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OpenStudy (sleepyjess):
^^^ that works too
OpenStudy (anonymous):
okay so its $520
OpenStudy (sleepyjess):
Yes! :D
OpenStudy (anonymous):
excellent
OpenStudy (anonymous):
theres other 2 parts :/
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OpenStudy (sleepyjess):
Ok :)
OpenStudy (anonymous):
we can help but no point really if YOU don't understand it...
OpenStudy (anonymous):
There is a delivery fee of $39 added to the sale price. What percent of the sale price is the delivery fee?
OpenStudy (sleepyjess):
percent = delivery fee/sale price
OpenStudy (anonymous):
What is the sale price?
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OpenStudy (anonymous):
i think it means 39 divided by 130??
OpenStudy (sleepyjess):
The sale price is what we just found
OpenStudy (anonymous):
so 39 divided by 520?
OpenStudy (anonymous):
\[\frac{39}{520}\times 100\]
OpenStudy (anonymous):
so its 39 over 5.2?
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OpenStudy (sleepyjess):
39/520, then move the decimal to the right 2 places
OpenStudy (anonymous):
okay so its $52
OpenStudy (anonymous):
7.5%
OpenStudy (anonymous):
Don't worry your self too much over this, this is really basic, you'll learn such kind of stuff in no time as you grow up...