How much money did Darlene start with?
[2700] How much money did Darlene start with? - Franklin lent Darlene as much money as she already had, then she spent $10. The next day, Franklin lent her as much money as she now had and again, she spent $10. On the third day Franklin once again lent her as much money as she now had and she spent $10, leaving her broke. How much money did Darlene start with? Express result to the accuracy of 2 decimal. - #brainteasers #math #riddles - Correct Answers: 69 - The first user who solved this task is Roxana zavari
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How much money did Darlene start with?

Franklin lent Darlene as much money as she already had, then she spent $10. The next day, Franklin lent her as much money as she now had and again, she spent $10. On the third day Franklin once again lent her as much money as she now had and she spent $10, leaving her broke. How much money did Darlene start with? Express result to the accuracy of 2 decimal.
Correct answers: 69
The first user who solved this task is Roxana zavari.
#brainteasers #math #riddles
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For two solid hours, the lady ...

For two solid hours, the lady sitting next to a man on an airplane had told him about her grandchildren. She had even produced a plastic-foldout photo album of all nine of the children.

She finally realized that she had dominated the entire conversation on her grandchildren.

"Oh, I've done all the talking, and I'm so sorry. I know you certainly have something to say. Please, tell me... what do you think of my grandchildren?"
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Johannes Kepler

Born 27 Dec 1571; died 15 Nov 1630 at age 58. German astronomer who formulated three major laws of planetary motion which enabled Isaac Newton to devise the law of gravitation. Working from the carefully measured positions of the planets recorded by Tycho Brahe, Kepler mathematically deduced three relationships from the data: (1) the planets move in elliptical orbits with the Sun at one focus; (2) the radius vector sweeps out equal areas in equal times; and (3) for two planets the squares of their periods are proportional to the cubes of their mean distances from the sun. Kepler suggested that the tides were caused by the attraction of the moon. He believed that the universe was governed by mathematical rules, but recognized the importance of experimental verification.«
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