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Four rivers and three temples

(6 votes, average: 3.00 out of 5)

November 5, 2014 by puzzler 6 Comments

Puzzle Time:
Four rivers and three temples

All the rivers are magical, moment a worshiper crosses a river with any number of flowers, it becomes double. (For eg 1 flower becomes 2 flowers, 2 become 4 and so on).

How many minimum number of flowers a worshiper needs 2 carry from beginning such that he offers equal number of flowers in all the three temples, and he is left with zero flowers at the end of fourth river.

Solve this ??

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Lets assume that he offers x flowers at every temple, thus he must have only x flowers left at the end of 3rd temple, otherwise he will not have zero flowers at the end of fourth river.

also we can say that after offering flowers at second temple he should be left with x/2 flowers.
similarly after offering flowers at first temple he should be left with (3x/2)/2 flowers.
Thus he should be carrying (x + 3x/4)/2 flowers initially, i.e. 7x/8 flowers initially.

For number of flowers to be integer, x =8, thus he must carry 7 flowers initially and offer 8 flowers at each temple.

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Comments

  1. Vaibhav Chawla says

    March 30, 2015 at 12:43 am

    Answer can be 7,14,21etc
    And the man gives 8,16,32 flwrs in tmpl
    There are so many solutns for dis given prblm

    Reply
    • Ranga Rajan says

      July 1, 2015 at 1:53 pm

      How will u say 7 14 21. Will u explain me

      Reply
    • Mehta Mehta says

      August 13, 2015 at 12:04 pm

      Vaibhav, the question asks for minimum number of flowers. Yes the answers you give are correct but minimum is 7 & 8

      Reply
  2. Pawan Sehrawat says

    November 11, 2014 at 7:06 pm

    7.

    Reply
  3. Kalpana Walke says

    November 6, 2014 at 3:57 pm

    7 flowers

    Reply
  4. Sukhdev says

    November 6, 2014 at 12:11 pm

    7 Flowers & offers 8 Flowers in each Temple.
    7 * 2 = 14 (First River)
    14-8 = 6 (First Temple)
    6*2 = 12 (Second River)
    12-8 = 4 (Second Temple)
    4*2 = 8 (Third River)
    8-8=0 (Third Temple)

    Reply

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