Question

3a=7b , 4b=5c , a:b:c ?

Answer 1

Answer:

a:b:c  = 35: 15 : 12

Step-by-step explanation:

It is given that

3a=7b , 4b=5c

From 3a=7b we can write,

b = 3a/7

From 4b=5c we can write

c = 4b/5 = 4/5 x3/7 x a = 12a/35

So we can write a,b, and c in terms of a

a : b : c = a : 3a/7 : 12a/35 = 35 : 15 : 12

Therefore a : b : c  = 35 : 15 : 12