Question

If a:b = 2:7 ,c:d = 2:1 and b:d = 5:4 then find a:c

Answer 1

Answer:

2:2

Step-by-step explanation:

a=2

C=2

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Answer 2

Given :    a:b = 2:7 ,c:d = 2:1 and b:d = 5:4  

To Find : a:c

Solution:

a:b = 2:7

a /b  =  2/7  

=> b  = 7a/2

c:d = 2:1

c/d  =  2/1

=> d = c/2

b:d = 5:4

b /d  = 5/4

=> 4b  = 5d

=> 4(7a)/2  = 5(c/2)

=>   28a  = 5c

=> a /c  = 5/28

=> a : c = 5 : 28

a : c = 5 : 28

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