Solution: How long will it take to fill the empty tank?

Solution: With all the three pipes open, how long will it take to fill the tank?

Solution: How long will it take both pumps to pump out water in the tank?

Solution: How old is Tom?

Solution: How many children are there?

Solution: What is the present age of Jerome?

Solution: If the father is now 38 years old, how old was his son 2 years ago?

Solution: How many years ago was Maja twice as old as Angel?

Solution: The sum of their ages is 38 years. How old is the girl?

Solution: Find the sum of the ages of John and Mark