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Mathematics 8 Online
OpenStudy (anonymous):

Which ratio correctly compares 75 cm to 60 mm? A. 25 : 2 B. 75 : 60 C. 5 : 4 D. 3 : 2

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

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

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.!!!!!!!!!!!!!!!!!!!!!!

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!!!!!!!!!!!!!!

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?

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!

OpenStudy (confluxepic):

You too.

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