Answer
The greatest number of people responded 2 hours or less.
612 people responded 2 hours or less.
Work Step by Step
You can look at the circle graph and visually confirm that the largest portion is the portion colored yellow. The yellow section is for the response of 2 hours or less, so 2 hours or less was the response given by the greatest number of people.
The circle graph indicates that $\frac{3}{5}$ of the people surveyed responded 2 hours or less. 1020 people were surveyed, so multiply 1020 by $\frac{3}{5}$to find the number who responded 2 hours or less.
$1020 \times \frac{3}{5}$ = $\frac{3060}{5}$ = $\frac{3060 \div 5}{5 \div 5}$ = $\frac{612}{1}$ = 612