SUMMER FUN!!! PROBLEM #3

Level 1

In a pond there are types of very long-living, fast-breeding frogs. Every day, the amount of frogs covering the pond floor double. If it takes 48 days for the frogs to cover the whole pond floor, how many days will it take them to cover half of the pond's floor?

24 34 47

Lucia and Emma by Lucia and Emma , 20, USA

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2 solutions

X X
Jul 21, 2018

If a day passed,then the frogs doubles.So the amount of yesterday's frogs is half the amount of today's.Hence it's 47 days.

1 Helpful 0 Interesting 0 Brilliant 0 Confused

Yup...same reasoning... @Lucia and Emma Nice problem! :D

Noel Lo - 2 years, 10 months ago

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Thanks @Noel Lo , I wrote it to try to trick people to split 48 days in half...

Lucia and Emma - 2 years, 10 months ago

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Yeah...I know right...

Noel Lo - 2 years, 10 months ago

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@Noel Lo – But that didn't work... brilliant mathematicians are too smart... only 3 people got tricked ;)

Lucia and Emma - 2 years, 10 months ago

I solved a problem before with the same logic.

B D - 2 years, 9 months ago
B D
Aug 13, 2018

Every day the number of frogs double and for 48 days the hole pond is covered. So yesterday (the 47th day) the frogs were covering half of the pond.

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