Math problem-plz help me

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ZSA26
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Math problem-plz help me

Unread post by ZSA26 » Fri Jan 11, 2019 11:32 am

2 people A and B with a help of a monkey collected many coconuts, got tired and fell asleep. At night A woke up and decided to have his share. He divided coconuts into 2 equal shares giving the left out single coconut to the monkey for its hard labor and fell asleep again. In the same way B woke up and not knowing whether anyone woke up he also divided the coconuts into 2 equal shares, giving the left out single coconut to the monkey. Early in the morning both of them woke up together, divided the coconuts into 2 equal shares and a left out coconut was given to the monkey. What is the minimum number of coconuts that they collected?

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samiul_samin
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Joined: Sat Dec 09, 2017 1:32 pm

Re: Math problem-plz help me

Unread post by samiul_samin » Fri Jan 11, 2019 6:40 pm

You can easily get the answer by back calculation.
As we are looking for the minimum number we assume that at the last time $2$ people got $1$ coconut each. So,total coconut=$(((3×2+1)×2)+1)=15$
Answer is $15$

ZSA26
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Joined: Sun Dec 23, 2018 2:23 pm

Re: Math problem-plz help me

Unread post by ZSA26 » Thu Jan 17, 2019 7:43 pm

It can also be 7

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samiul_samin
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Re: Math problem-plz help me

Unread post by samiul_samin » Thu Jan 17, 2019 8:09 pm

ZSA26 wrote:
Thu Jan 17, 2019 7:43 pm
It can also be 7
No.You read the question again.This is a very common question and known as sailor and monkey problem.You can know about it here

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