Soldier

An experienced soldier digs a good trench in 30 hours. Two soldiers dug the same trench every 40 hours. How many hours will the ditch dig all three together?

Your answer:

h


Help us improve! If you spot a mistake, please let let us know. Thank you!







Tips for related online calculators
Looking for calculator of harmonic mean?
Looking for a statistical calculator?
Need help calculating a sum, simplifying, or multiplying fractions? Try our fraction calculator.
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:

statisticsalgebranumbersUnits of physical quantitiesthemes, topicsGrade of the word problem

Related math problems and questions: