Study the following graph to answer these questions.
The following bar graph shows the revenue generated by three realty firms A, B and C during 2012 to 2016. Each of these firms builds Low Income Group (LIG) apartments, Middle Income Group (MIG) apartments and High Income Group (HIG) apartments.
In 2013, A got 27% of its revenue through LIG housing whereas in the same year B earned 42% of its revenue through MIG housing. Both the companies spent ₹350 crore less than these revenues obtained. The difference in percentage profits thus earned by A and B is .........