Question

Please Answer Me Fast​

Answer 1

Step-by-step explanation:

A:B=(3/5:5/7)X3/4=9/20:15/28

B:C=(3/4:2/5)x5/7=15/28:10/35

A:B:C=9/20:15/28:10/35

Answer 2

Answer:

Step-by-step explanation:

Question :-

$If\: A : B = \dfrac{3}{5}:\dfrac{5}{7},\: B:C = \dfrac{3}{4}:\dfrac{2}{5},\:find\: A:B:C$

Solution :-

$A : B = \dfrac{3}{5}:\dfrac{5}{7}$

$\implies A : B = \dfrac{3}{5}\times \dfrac{7}{5}\\\\= \dfrac{21}{25}$

= 21 : 25

$B:C = \dfrac{3}{4}:\dfrac{2}{5}$

$\implies B:C = \dfrac{3}{4}\times \dfrac{5}{2}\\\\= \dfrac{15}{8}$

= 15 : 8

As, there are two value of B :-

We need to Multiply A:B with '15' and B:C with '25' :-

$A:B = 21\times15:25\times15$

= 315:375

$B:C = 15:8 = 15\times25:8\times25$

= 375 : 200

A:B:C = 315 : 375 : 200

= 63 : 75 : 40