Q31. 
A car driver driving in fog, passes a pedestrian who was walking at the rate of 2km/h in the same direction. The pedestrian could see the car for 6 min and it was visible to him up to a distance of 0.6 km. The speed of the car would be : 
A.  8 km/h 

B.  800 m/h 

C.  200 m/h 

D.  15 km/h 
Q34. 
Jay started cycling along the boundaries of a square field from corner point $A$. After half an hour he reached the corner point $C$, diagonally opposite to $A$. If his speed was 8 km/hr, the area of the filed in square km is: 
A.  64 

B.  16 

C.  9 

D.  4 
Q35. 
Wheel of diameter 7cm and 14 cm start rolling simultaneously from $X$ and $Y$ which are 1980 cm apart towards each other in opposite directions. Both of them make same number of revolutions per second. If both of them meet after 10 s, the speed of the smaller wheel is: 
A.  22 cm/s 

B.  44 cm/s 

C.  66 cm/s 

D.  88 cm/s 