Answers

2014-09-16T19:17:58+05:30
We know that,
a:b=5:9
b:c=4:7
so,b is common in both.
so,5:9*4=20:36
4:7*9=36:63
so,36 is common in both which is the value of b.
therefore,
a:b:c=20:36:63       and
a:c=20:63
2 5 2