## Math problem-plz help me

For students upto class 5 (age upto 12)
ZSA26
Posts: 2
Joined: Sun Dec 23, 2018 2:23 pm

### Math problem-plz help me

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?

samiul_samin
Posts: 999
Joined: Sat Dec 09, 2017 1:32 pm

### Re: Math problem-plz help me

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\$

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

### Re: Math problem-plz help me

It can also be 7

samiul_samin
Posts: 999
Joined: Sat Dec 09, 2017 1:32 pm

### Re: Math problem-plz help me

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