Question

How do you do:
A:B=3:4,C:D=4:5 then A:B:C =?

Answer 1

Answer:

A: B : C

hope I am right.

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Answer 2

Answer:

A:B:C = 15:20:25

Step-by-step explanation:

Given:

If A:B = 3:4and C:D = 4:5 then A:B:C is

To find:

A:B:C

Solution:

To find a:b:c is made same both the ratios LCM of 4 and 5 is 20.

Now,

A:B =

$\frac{3}{4} = \frac{3 \times 5}{4 \times 5} = \frac{15}{20}$

B:C =

$\frac{4}{5} = \frac{4 \times 5}{5 \times 5} = \frac{20}{25}$

∴ A:B:C = 15:20:25 ans.