10 Pounds of Flour

You have a big bag of flour, two 5lbs weights, and an inaccurate balance scale. How can you measure exactly 10lbs of flour?

Put both weights on one side, then fill the other side with flour so that the scale balances out. Then remove the weights and replace them with flour so that the balance scale is balanced again. The amount of flour you put there is exactly 10lbs.

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Katie Katrina
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Doesn’t that mean you just have 20 lbs of flour?

Abby Burns
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Abby Burns

You need a new response

June Creighto
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June Creighto

You explained that weird, but after rereading this six times I get what you’re saying. You are saying to place two weights on one side and fill the other side with flour until the scale reads balanced, then Pour flour where the weights were UNTIL the scale balances out again. My answer to this was to simply measure one weight to the other and calculate out the difference to mentally balance the balance