Question

if A:B=3:5 and B:C=4:7. find A:B:C​

Answer 1

Answer:

answer for your question as follows

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Answer 2

Answer:

First make b same in both the ratios

L.C.M of 5 and 4 = 20

So, we make b equal to 20 in each case

Now,

a : b = 3 : 5 = $\frac{3}{5}$

$\large\frac{3 \times 4}{5 \times 4}$

$\large \frac{12}{2}$

12 : 20

b : c = 4 : 7 = $\frac{4}{7}$

$\large \frac{4 \times 5}{7 \times 5}$

$\large \frac{20}{35}$

20 : 35

a : b : c = 12 : 20 : 35