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avatar+132 

A survey of

21

people found that

15

had the same Internet service provider. The survey reported this information as the ratio

15 : 21.

Reports about the survey used the following ratios to describe the results. Which is not an equivalent​ ratio? What was the​ error?

20 : 28

25 : 31

5 : 7

10 : 14

 Apr 15, 2021
 #1
avatar+2124 
+2

15/21 = 5/7 = 10/14 = 15/21 = 20/28 = 25/35

 

Which one is wrong?

 

=^._.^=

 Apr 15, 2021
 #2
avatar+121004 
+2

15/21  =   (3*5) / ( 3 * 7)  =  5/7

 

20/28  =  ( 4 * 5)  /( 4 *7)  =  5/7

 

25/31   =   25 / 31  ⇒   the  one  that  is not equivalent

 

 

cool cool cool

 Apr 15, 2021

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