Question

If a:b = 5:6 , b:c =4:7 then find a:b:c

Answer 1

Step-by-step explanation:

a:b:c=?

lets put b and c in the form of a

Given: a:b=5:6 a/b =5/6 b=(6a/5)--(1)

b:c=4:7 =b/c=4/7 =7b/4=7(6a/5)/4=42a/20=21a/10---(2)

using (1)and (2)

a:b:c =a:6a/5 :21a/10

(taking LCM of the fractions that is 10 )

=10a/10:12a/10:21a/10

=a:b:c=10:12:21

mark it as brainliest