If A:B = 3:5 & C:D = 4:7, find A:B:C

1.	If A:B = 3:5 & C:D = 4:7, find A:B:C
Answer» Answer: Well while solving questions related to ratios,always keep in the mind about the equality between the variables Consider first case A:B=5:9 Can also be WRITTEN as 54:94 Well I just multiplied NUMERATOR and denominator by 4 so actually I multiplied by 1 In the same way B:C can also by multiplied by 9 on both numerator and denominator giving the ratio B:C =49:79 Therefore, A:B=20:36 And B:C=36:49 Since on both ratio B is same Hence A:B:C=20:36:49

Answer»

Answer:

Well while solving questions related to ratios,always keep in the mind about the equality between the variables

Consider first case

A:B=5:9

Can also be WRITTEN as 5*4:9*4

Well I just multiplied NUMERATOR and denominator by 4 so actually I multiplied by 1

In the same way B:C can also by multiplied by 9 on both numerator and denominator giving the ratio

B:C =4*9:7*9

Therefore,

A:B=20:36

And B:C=36:49

Since on both ratio B is same

Hence A:B:C=20:36:49

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If A:B = 3:5 & C:D = 4:7, find A:B:C

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