Latest Patni Aptitude Question SOLUTION: How many number of weights do u need to weigh 31 kg of rice if u have only one 1kg weights stone ? a. 30. b. 31. c.5. d.4.

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How many number of weights do u need to weigh 31 kg of rice if u have only one 1kg weights stone ?
a. 30. b. 31. c.5. d.4.

Solution

First we shall weight 1 Kg rice by 1 Kg weight
then 2 Kg rice by 1 Kg rice + 1 Kg weight
then 4 Kg rice by previously measured 3 Kg rice + 1 Kg weight
& etc
This answer is given by SHIV and is correct answer

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Asked In Patni (12 years ago)

Solved Shiv Kumar Read Solution (3)

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Read Solution (3) :

Shiv Kumar  (12 years ago)

Ans C (Five Weights)

Weights are 1,2,4,8,16

Is this solution Helpfull? Yes (9) | No (5)  

Rajeswari  (10 years ago)

plz explain in detail

Is this solution Helpfull? Yes (1) | No (2)  

Santosh  (8 years ago)

first measure 1kg rice by 1 kg weight
then use this 2kg (1kg rice+ 1 kg weight) to measure 2kg rice

now combine this to get 3kg rice + 1 kg weight to measure 4 kg rice

add this newly measure 4kg + 3kg + 1kg weight to measure 8 kg

add this 8kg+ 4kg + 3kg + 1kg weight to measure 16 kg rice

now combining all u get 31 kg rice + 1 kg weight

so the answer is c. 5

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