The Young Mathematician's Guide: Being a Plain and Easie Introduction to the Mathematicks ... With an Appendix of Practical Gauging

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A. Bettesworth, 1734 - 456 pages

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Page 284 - had,' altered by Petty. APPENDIX. i. [EXTRACT FROM THE DISCOURSE CONCERNING THE USE OF DUPLICATE PROPORTION1, 1674.] The Eleventh Instance. In the Life of Man, and its Duration. It is found by Experience, that there are more persons living of between 16 and 26 years old*, than of any other Age or Decade of years in the whole life of Man (which David and Experience say to be between 70 and 80 years :) The reasons whereof are not abstruse, viz. because those of 1 6 have passed the danger of Teeth,...
Page 98 - If 2 men can do 12 rods of ditching in 6 days ; how many rods may be done by 8 men in 24 days ? Ans.
Page 223 - Four men walking abroad found a purse containing shillings only, out of which every one of them took a number at a venture. Afterwards comparing their numbers together, they found that if the first took 25 shillings from the second, it would make his number equal to what the second had left. If the second took 30 shillings from the third, his money would then be triple what the third had left. And if the third took 40 shillings from the fourth, his money would then be double of what the fourth had...
Page 33 - Corn, taken out of the Middle of the Ear, and being well dried, Three of them in length were to make one Inch ; and thence the reft, as in this Table.
Page 115 - Alligation total is a method, when the particular rates of all the ingredients proposed to be mixed, the sum of all their quantities, with the mean rate of that Sum being given, to find the particular quantities of the mixture. RULE. Set...
Page 48 - FRACTIONS, or broken numbers, are expressions for any assignable parts of an unit ; and are represented by two numbers, placed one above the other, with a line drawn between them. The number above the line is called the numerator, and that below the line the denominator.
Page 252 - Annuities or pensions are said to be in arrears when they ' are payable or due either yearly, half-yearly, or quarterly, auid are unpaid for any number of payments.
Page 14 - One Number is faid to Multiply another, when the Number Multiplied is fo often Added to it Jelf, as t here are Units in the Number Multiplying ; and another Number is produced.
Page 114 - Mixture, and any one of the quantities to be mix'd being given. Thence to find how much of every one of the other Ingredients is requifite to compofe the Mixture.

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