Solution: How many workers are needed in an assembly line?

Solution: If x=1 and y=2, then z=2. Find z when x=3 and y=4

Solution: How many children are there in the family?

Solution: Find the value of n, if two of the engineers are replaced

Solution: Find harmonic mean given arithmetic mean and geometric mean of two numbers

Solution: Find the speed of the boat in still water

Solution: How many liters of distilled water should be added to a liter of 35% acid solution

Solution: Juan is taller than Maria by how many percent?

Solution: In how many days can all of them finish the job working together?

Solution: Find the sum of all the odd integers between 100 and 1000