Let the original side be x.
The side of new square = 
= 
Area of new square = 
Percentage fall in area = 
= 64%
Ans : C
In one hour Eric cleans 
of the room.
In one hour Clayton cleans 
of the room.
In one hour Eric and Clayton clean = 
Time taken to complete entire work = 3 1/3 hours.
Ans : B
Average speed when taken for the whole
journey = 
where x is the speed during the first part and y is the speed during the second part of the journey
Ans : A
