Which ratio correctly compares 75 cm to 60 mm?
A.
25 : 2
B.
75 : 60
C.
5 : 4
D.
3 : 2
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OpenStudy (anonymous):
help plz @confluxepic and @TheSmartOne
OpenStudy (wmj259):
Do you notice any pattern like division between 75 and 60? OR like a common factor?
OpenStudy (confluxepic):
What do you think it is.
OpenStudy (confluxepic):
@DoctorWholover23 @TheSmartOne
OpenStudy (micahm):
google it
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OpenStudy (catlover5925):
its C because if you take 75 and divide it by 5 you get 15 and then take 60 and divide it by four and you also get 15
OpenStudy (anonymous):
i think it is C.5:4, is that correct?
OpenStudy (confluxepic):
Correct.
OpenStudy (confluxepic):
Do you understand why. I can exlain it to you.
OpenStudy (anonymous):
thank you @confluxepic,@Catlover5925,@wmj259,and @TheSmartOne
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OpenStudy (confluxepic):
You're welcome.
OpenStudy (anonymous):
an thank you @campbell_st
OpenStudy (campbell_st):
well 1st thing you need to do with this ratio question is have the measurements the same
75 cm = 750 mm
so it becomes
750 : 60
now simplify
OpenStudy (confluxepic):
Oh. The cm and mm.
OpenStudy (anonymous):
the answer is C.!!!!!!!!!!!!!!!!!!!!!!
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OpenStudy (confluxepic):
Divide by ten on both sides.
OpenStudy (confluxepic):
Get rid of the 0.
OpenStudy (confluxepic):
What do you get.
OpenStudy (campbell_st):
I would reconsider your answer.... as C is incorrect
OpenStudy (anonymous):
the answer is B!!!!!!!!!!!!!!
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OpenStudy (confluxepic):
Yes.
TheSmartOne (thesmartone):
Yes because there are different units of measurements..
OpenStudy (campbell_st):
1st rule of ratios is to make sure the units for the quantities are the same... if not change them
nope wrong again...
do the maths shown above to get the answer
OpenStudy (campbell_st):
you can change 60 mm to cm
ot change 75cm to mm
either method gives the same answer.
OpenStudy (anonymous):
how is it wrong?
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OpenStudy (campbell_st):
same units
750:60 this is mm
or
75: 6 this is cm
now simplfy both and see if you get the same answer
OpenStudy (anonymous):
oh the answer is A
TheSmartOne (thesmartone):
Yes it is.
OpenStudy (campbell_st):
thatt's correct
OpenStudy (anonymous):
yay! Happy early thanksgiving!
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