Answer the question by referring to the bar graph and the line graph below 

The above graph shows the monthly turnover of the Food, Gas and Hotel industries in the first half of the year 2019.

The above line graph shows the profit of the three given industries as a percentage of the turnover, month wise, for the first half of the year 2019.

What is the percentage increase in the profit of the Food industry in the month of March with respect to the month of May?