Biennial Report of the Superintendent of Public Instruction of the State of California

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Department of Public Instruction, 1875
 

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238 ページ - Chicago, to buy flour, agreeing to pay 5 per cent on the cost of the flour for commission; how many barrels of flour does he receive, the market price being $12 per barrel? 9. Let $140 be divided into three parts, proportional to 3, 5, and 6. 10. Give the principles on which the solution of proportions depeuds.

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