Page:The Rhind Mathematical Papyrus, Volume I.pdf/117

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63]
MISCELLANEOUS PROBLEMS
101

Problem 62
Example of reckoning the content: of a bag of various precious metals. Suppose it is said to thee, .4 bag containing equal weights of gold, silver and lead, has been bought for 84 sha'ty. What is the amount in it of each precious metal, that which is given for a deben of gold being 12 sha'ty, for a deben of silver 6 sha'ty, and for a deben of lead 3 sha'ty?

Add that which is given for a deben of each precious metal. The result is 21 sha'ty. Multiply 21 so as to get 84, the 84 sha'ty for which this bag was bought. The result is 4, which is the number of deben of each precious metal.

Do it thus:

Multiply 12 by 4 getting 48 sha'ty for the gold in the bag,
Multiply 6 by 4 getting 24 sha'ty for the silver,
Multiply 3 by 4 getting 12 sha'ty for the lead,
Multiply 21 by 4 getting 84 sha'ty altogether.

The sha'ty was a seal, and the word here represents a unit of value (see Weill, 1925). The deben was a unit of weight, equal to about 91 grammes. The papyrus does not say that the bag contains equal weights of gold, silver, and lead, but in the solution the author proceeds as if this condition was understood.

Problem 63

Example of dividing 700 loaves among four men in the proportion of the numbers 23, 12, 13 and 14. Let me know the share that each man receives.

Add 23, 12, 13 and 14; it makes 11214. Get 1 by operating on 11214; it makes 1214. Take M 1214 of 700; it is 400. 23,12,13 and 14 of 400 will give the shares of the four men.

Do it thus:

The quantity is 700
12114 of it is 400
23 of 400 to one is 26623
12 of 400 to one is 200
13 of 400 to one is 13313
14 of 400 to one is 100
Total 700.