railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Quantitative Aptitude Ratio and Proportion Compound Ratios
If \(a\;:b = \frac{3}{2}\;:\;\frac{7}{3}\) and \({\rm{b\;}}:{\rm{c}} = \frac{1}{5}\;:\;\frac{1}{7}\) then find a : b : c.
1
14 : 9 : 10
2
9 : 14 : 10
3
10 : 9 : 14
4
4 : 5 : 7