Potato Weight and Water Content

The video revisits a puzzle about potatoes, initially containing 99% water. The teacher guides students through solving the puzzle, encouraging them to think critically about the surprising result. The solution involves understanding the change in water percentage and its impact on the total weight. The teacher explains the logic behind the solution, emphasizing the importance of careful analysis and critical thinking.

What was the initial weight of the potatoes mentioned in the puzzle?

• 200 kilos

• 100 kilos

• 50 kilos

• 150 kilos

What percentage of the potatoes was water initially?

• 100%

• 90%

• 99%

• 95%

What was the teacher's suggestion for solving the puzzle?

• Use a calculator

• Think about the percentages

• Ignore the water content

• Guess the answer

What was the initial amount of starch in the potatoes?

• 1 kilo

• 10 kilos

• 2 kilos

• 5 kilos

How much water was left in the potatoes after drying?

• 95%

• 99%

• 98%

• 90%

What method did the teacher use to calculate the final weight?

• Estimation

• Unitary method

• Graphical method

• Trial and error

What was the final weight of the potatoes after drying?

• 50 kilos

• 100 kilos

• 25 kilos

• 75 kilos

Why was the result of the puzzle surprising?

• The potatoes disappeared

• The weight changed significantly despite a small percentage change

• The percentage of water changed drastically

• The starch content increased

What did the teacher challenge the students to do after presenting the solution?

• Find a mistake in the calculation

• Memorize the solution

• Redo the puzzle with different numbers

• Ignore the result

What analogy did the teacher use to describe finding the trick in the puzzle?

• Building a puzzle

• Performing a magic trick

• Solving a crossword

• Cooking a recipe