Management Aptitude Test Sep 2011 Paper

(1) In May month = $\frac{190-140}{140}$ x 100
= $\frac{50}{140}$ x 100 = 35.71%
In July month = $\frac{210-160}{160}$ x 100
= $\frac{50}{160}$ x 100 = 31.25%
In September month = $\frac{250-225}{225}$ x 100
= $\frac{25}{225}$ x 100 = 11.11%
In August month $\frac{225-210}{210}$ x 100
= $\frac{15}{210}$ x 100 = 7.14%
Hence, in May month, the previous month cost escalated the most.