In a farm there are cows and hens. If the heads are counted, they are 180 and if legs are counted, they are 420. What is the number of cows in the farm?
What number comes next? 9, 15, 13, 19, 17, 23, …….
How many 1-inch square tiles would it take to cover the floor of a closet that has dimensions 5 feet by 4 feet?
Maria is twice as old as Vicky. Eight years ago, Maria was 6 years younger than three times Vicky's age at that time. How old will Maria be in 5 years?