Q 6: Harry walked to the town at a speed of 4 miles/hr, and came back by bicycle at a speed of 12 miles/hr. The total time for to and fro journey was 5/2 hrs. Find the time taken by him to travel foot. 16.5 minutes 112.5 minutes 11.25 minutes

Q 7: P = $7,500, T = 4years and R = 2%, Find interest. $900 $950 $800