IF BREADTH=b meters THEN LENGTH=4 meter less than 3 times than the breadth of the hall. LENGTH=3b-4 meters the length of the rectangular hall is=3b-4 meters
Jamal's age is 5 because Tim is 3 years younger which is 2 and add those two together and you get 7 and Wilma is twice his age so 10 and add the others