The following table gives the annual profit of a company (in lakh rupees) 2008-09 2009-10 2010-11 2011-12 2012-13590 620 656 690 726The period which has maximum percent increase in profit over previous period

The correct answer is (a).

The percent increase in profit over the previous period is calculated as follows:

Percent increase = (Profit in current period – Profit in previous period) / Profit in previous period * 100%

For the period 2009-10, the percent increase in profit is:

Percent increase = (620 – 590) / 590 * 100% = 5.13%

For the period 2010-11, the percent increase in profit is:

Percent increase = (656 – 620) / 620 * 100% = 6.15%

For the period 2011-12, the percent increase in profit is:

Percent increase = (690 – 656) / 656 * 100% = 5.07%

For the period 2012-13, the percent increase in profit is:

Percent increase = (726 – 690) / 690 * 100% = 5.61%

Therefore, the period with the maximum percent increase in profit is 2009-10.