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Pre-Algebra
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OpenStudy (deaththekid975):
Maddie's bowling score was 230 last week, but only 190 this week. What was the percent decrease in Maddie's score?
A.
1.74%
B.
2.11%
C.
17.4%
D.
21.1%
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OpenStudy (welshfella):
decrease = 230 - 190
divide this by last weeks score then multiply by 100.
OpenStudy (smartnerd1111):
so you do 230-190=40 and then do 40/190 to get your answer
OpenStudy (deaththekid975):
ok
OpenStudy (smartnerd1111):
then you multiply that answer by 100
OpenStudy (welshfella):
No - you divide by LAST weeks score The decrease is based on this.
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OpenStudy (deaththekid975):
0.210
OpenStudy (smartnerd1111):
so you do 230-190=40 and then do 40/190 then multiply that answer by 100
OpenStudy (smartnerd1111):
@deaththekid975 multiply 0.210 by 100
OpenStudy (deaththekid975):
21.05
OpenStudy (smartnerd1111):
or 21.1
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OpenStudy (welshfella):
NO that is incorrect last wekks score was 230
correct is (40/230) * 100
OpenStudy (smartnerd1111):
ohhhhhhhhhhhhhh
OpenStudy (aveline):
I second welshfella. @smartnerd1111 probably misread the question (like me at first xD). It's the percent decrease not increase
OpenStudy (smartnerd1111):
i misread it is 40/230 * 100
OpenStudy (deaththekid975):
17.39
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OpenStudy (smartnerd1111):
or 17.4%
OpenStudy (deaththekid975):
ok! thanks
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