A merchant had a 40 kg measuring weight that broke into four

pieces as the result of a fall. When the pieces were subsequently

weighed, it was found that the weight of each piece was a whole

number of kilograms and that the four pieces could be used to

weigh every integral weight between 1 and 40 kg. What were the

weight of the pieces.

Note:Weights may be places in either pan of the balance.

## 20 comments:

1 3 9 27

Weights are 1 kg ,3kg,9 kg,27 kg

Similar to Binary Number System.

The question should be clarified by saying "every integral weight from 1 to 40 ...". Between implies that 1 and 40 are not included.

kilograms and that the four pieces could be used to

weight loss pills every integral weight between 1 and 40 kg. What were the

weight of the pieces.

5 10 10 15 ?

Weights are 5 KG,15 KG,20 KG

Well in order for every integral weight to be measured, at least one of the weights must be 1 kg. Then the remaining pieces could be 4 kg, 5 kg, and 30 kg so that all the pieces add up to 40 kg and you can easily weight it in quantities of 5s and 1s.

Darby

4, 8, 12, 16

How about just buying a new weight ;)

If you can play around with the weights, then i think there are lots of solutions. Like if you can do 2 weights to distinguish the weight. With numbers 2, 6, 13, 19. You cannot get exactly 39 but you can get 40 and 38=13+19+6. So 39 can be obtained by 2 weights, it is lighter than 40 but heavier than 38. Is it valid?

Hello. And Bye. Thank you very much.

Hello. And Bye. Thank you very much.

simply dropping by to say hi

Hi, this problem follows 3 to the power 0, 3 to the power 1, 3 to the power 2 and 3 to the power 3. If the weight is 121 again the same pattern continues. Is there any reason for this. Why it has to be 3 to the power0,1,2,3 and so on for weighing on both the side. If the weighing on one side only it follows 2 to the power series. Is there an explanation for this.

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