Question

If A:B = 3/5 : 5/7 and B:C = 3/4: 2/5 Find A:B:C?​

Answer 1

Answer:

63:75:40

Step-by-step explanation:

A:B=3 by 5, 5 by 7

crossmultiplication

Then,

A:B=21:25

B:C=3 by 4, 2 by 5

Then,

B:C=15:8

then,

A:B:C=63:75:40

Answer 2

Answer:

The answer is 63:75:40

Step-by-step explanation:

A:B = 3/5 : 5/7 = 3/5*5/7 = 21/25

B:C = 3/4 : 2/5 = 3/4*2/5 = 15/8

Therefore, the ratio of A:B:C =

A:B = 21*15 : 25*15

B:C = 15*25 : 8*25

Hence,

A:B:C = 21*15 : 25*15 : 8*25

= 21*3 : 25*3 : 8*5

= 63:75:40

I hope this answer helps you!!!