caroline runs 3 1/2 miles in 22 1/4 minutes. how many miles does she run per minute?
A. 3/22 mile per minute
B. 62/221mile per minute
C. 14/89 mile per minute
D. 4/39 mile per minute
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OpenStudy (jack1):
caroline runs 3 1/2 miles in 22 1/4 minutes
speed =
\(\huge \frac {3.5~~ miles}{22.25~~minutes}\)
so 3.5 miles in 22.25 minutes... how far in 1 minute?
OpenStudy (anonymous):
B
OpenStudy (jack1):
no
OpenStudy (jack1):
why b?
OpenStudy (jack1):
multiply top and bottom by 4, so u get whole numbers
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OpenStudy (anonymous):
OH I think it D because I divided all of them and D = 9.75
OpenStudy (jack1):
ok... how does 9.75 come into this tho?
OpenStudy (anonymous):
I don't really know
OpenStudy (jack1):
ok... so get
\(\huge \frac {3.5~~ miles}{22.25~~minutes}\)
and times top and bottom by 4... what do u get?
OpenStudy (anonymous):
3.5 = 14 22.25=89
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OpenStudy (jack1):
perfect
OpenStudy (jack1):
so answer is...?
OpenStudy (anonymous):
C do you mind if I fan you
OpenStudy (jack1):
yep, C
and fan away dude, i never mind that hey ;)