Let the original side be x.
The side of new square =
Area of new square =
Percentage fall in area =
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
where x is the speed during the first part and y is the speed during the second part of the journey
Ans : A