In store A the price of mayonnaise went down from $4.31 to $3.71. in store B it went from $ 8.09 to $7.23. In store C it went from $8.07 to 3.53 . what was the average decrease?
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OpenStudy (anonymous):
add the orininal peize.. (1)
find total decrease (2)
now (1/2)*100
u will get it......
OpenStudy (anonymous):
do i add all the original prices together?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
does this mean 'average decrease as a price' or 'average decrease as a percent'?
OpenStudy (anonymous):
as a price
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OpenStudy (anonymous):
okhay i added the original prices now what do i do?
OpenStudy (anonymous):
find the decrease in the price at each shop........
OpenStudy (anonymous):
now add all the decrease from each shop
then
to find average decrease divide the total decrease bay 3( since three terms )
OpenStudy (anonymous):
yea i got it wrong
OpenStudy (asadkarim7):
1st decrese = 4.31-3.71= 0.6
2nd decrese = 8.09-7.23=0.83
3rd decrese = 8.07-3.53=4.54
avg = sum of data / no of data
0.6 - 0.83-4.54 / 3
5.97/3=
1.99
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