The document appears to be a collection of word problems in Spanish. It includes questions about: - How many days it would take one worker to complete a job if they worked 8 hours per day instead of 6 hours per day. - How many liters of fuel a coach consumes per 100 km based on consumption over 250 km. - How many days it would take to construct a ship if the workforce increased by 50 people. - How much each of three neighbors should pay to rent a chainsaw they shared for 15 days. - The proportion of gold in a mixture of gold alloys with different gold contents and purities. - How long it would take a runner behind