Question

If a:b = 4:7 and b:c = 5:3 then find a:b:c

Answer 1

Answer:

20:35:21 is the answer

Step-by-step explanation:

a/b=4/7. b/c=5/3

a/b=4×5/7×5

b/c=5×7/3×7

a=20

b=35

c=21

hope it helps you please mark as BRAINLIEST

Answer 2

Answer:

20:35:15

Step-by-step explanation:

given:

A:B=4:7 & B:C=5:3

LCM of both B i.e. 7 and 5 is 35

A:B=4:7=20:35

B:C=5:3=35:15

A:B:C= 20:35:15