Elementary and practical arithmetic; on the inductive system, by analysis and synthesis Being also, a key to any arithmetical work, on the principles of association and visible illustration

by Charles Waterhouse

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1844 ...lost 20 per cent, whereas I ought to have gained 30 per cent What was the real value of the horse? First, as 100--20: 60:: 100: $75, cost of the horse. Then, as 100: 30:: 75: $97.50, Ans. 9. B owns of a ship, which cost him $3691, and sells of his part to C, at 12 per cent advance. Required the share of each in the ship, the cost of C's part, and how much B's part stands him. First, as 8: 3691:: 3: $1384.125=1 of $3691. And, as 100: 112:: 1384.125: $1550.22, cost of C's part Then, 1550.22--1384.125=$166.095. And 3691--166.095=:$3524.905, B's part stands hira C's part is of B's part is g of 10. A bought of a store, and soon after he paid $1230.075 for ij7T of the same, which was at 10 per cent advance on the rate of the first purchase; and to own the whole, he bought the remainder at 25 per cent advance. What did the store cost him? As 110: 100:: 1230.075: $1118.25, cost of the 7 shares. And, as 7:111 25: $399a75, cost of the 25 shares. Then, as 7: 1118.25:: 5: $798.75, cost of the 5 shares at the first purchase price. Now, as 100: 125:: 798.75: $998.4375, cost of 5 shares. Lastly, 3993.75-1230.075-f-998.4375=$62225625, Ans. 4. Required to know what would be gained or lost per cent, by goods sold at another rate, when there is gained or lost so much per tent by being sold at a given rate. EXAMPLES. 1. If by selling goods at 2 s. 3 d. a pound, I clear cent per cent, what do I clear per cent by selling goods at 9 guineas the hundred? Cent per cent is a cent gained by the cent paid out 2 s. 3 d.=27 d., and 9 guineas are 2268 d.; 22684-112=201 d. a pound. Then, as 27: 200, cent per 20: 150. Lastly, 150--100=50 per cent, Ana. 2. If by selling goods at $24 the cwt, I gain 20 per cent, what do I gain or lose per cent, by selling goods at $2i the cwt? Fi...

66 pages, Paperback

Published May 19, 2012