Question

what the common ratio of 80,20,5,5/4...
I don't understand how 5 gets to 5/4?!?!?!

Answer 1

how do you get from 80 to 20?

Answer 2

-60

Answer 3

does that same thing work in getting from 20 to 5?

Answer 4

yes its - 15

Answer 5

but im not sure if your suppose to simplify 5/4 ? or what? lol

Answer 6

no, you'd have to subtract 60. think of a different way so that the same operation with the same number will get you from 20 to 5.

Answer 7

to find the common ratio:
\[\frac{ 20 }{ 80 }=\frac{ 5 }{ 20 }=\frac{ \frac{ 5 }{ 4 } }{ 5 }\]

Answer 8

well I tried doing 20 -60 and it gets me negative 40

Answer 9

you realise that for all the ratios above, you get 5....so that is the common ratio

Answer 10

5 is not the common ratio

Answer 11

@trisha9876 think of another way to get from 80 to 20. not addition or subtraction, but some other way

Answer 12

@kausarsalley it's not... i'll message you privately

Answer 13

yea? but in another ratio its 2,4,8,16
and to get from 2 to 4 you have to times it by 2 to get 4 and times 2 x 4 to get 8 and so one an so forth!

Answer 14

does that make sense? lol

Answer 15

just think of the different ways to get from 80 to 20, using something other than addition or subtraction. give it a shot

Answer 16

ok @pgpilot326

Answer 17

hint... multiplication or division...

Answer 18

okkaaayyyy I got it!!! thanks guys! and its multiplication! thanks

Answer 19

can you share the ratio with me?