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From Georgian Papers Programme Transcription Wiki
(23) But as the first sort is worth 60d. an oz. the whole value of the first in the mixture will be 60x. And the value of the second sort will be 60y. Also 50. oz at 65d. is 50 x 65 = 3250. the value of the mix'd mass. Therefore 60x + 60y = 3250 And formula Mult. formula Add formula Therefore formula And formula
89. In like manner may other questions relating to the rule of underline alligation /underline in arithmetic be solved.
90. VII. The product of two numbers is 100 & their ratio as 5 to 4: What are the numbers? Let first number = x Second = y
