+0  
 
0
382
2
avatar+2051 

1) Given the proportion a/b = 11/20 , what ratio completes the equivalent proportion a/11 = ? (The answer needs to be a fraction)

 

 

2) A model is made of a car. The car is 3 meters long and the model is 4 centimeters long. What is the ratio of the length of the car to the length of the model?

RainbowPanda  Mar 5, 2018
 #1
avatar+90968 
+2

1) Given the proportion a/b = 11/20 , what ratio completes the equivalent proportion a/11 = ? (The answer needs to be a fraction)

 

Notice something, RP

 

If

5/10   =  1/2        then it is also true that  the ratio of the numerators to the ratio of the denominators is the same....that is :

 

5/1  =  10/2

 

This implies   that

 

a /b   =  11/20      means that

 

a / 11  =  b / 20

 

Do you see this??

 

2) A model is made of a car. The car is 3 meters long and the model is 4 centimeters long. What is the ratio of the length of the car to the length of the model?

 

Equate units in terms of centimeters

 

3 m  =   300  cm

 

Ratio  :   actual length  / model length   =    300 cm / 4 cm   =   75 / 1   =  75 : 1

 

 

cool cool cool

CPhill  Mar 5, 2018
 #2
avatar+2051 
0

Thank you so much for all of your help, I really appreciate it!

RainbowPanda  Mar 5, 2018

24 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.