A new and concise system of arithmetick; containing vulgar, decimal, and logarithmical arithmetick; calculated for the use of the inhabitants of the ... is shown a universal mode of cancelling ... - Softcover
Synopsis
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. 1822 Excerpt: ...yards at Id. per £26 4 3 ansr. as before. Case VIII. To find the discount of any invoice or bill of parcels, at any rate per cent. RULE. Multiply the pounds in the invoice by the amount of the discount of one pound, at the rate:,er cent., and take parts for the shillings and pence; then add them together, and the sum will be the discount required. Note. For the discount of £1 at aoy rate per cent., see the table. EXAMPLES. 1. What is the discount of an invoice, amounting to £65 13 4, at 7 per cent? OPERATION. £. s. d. The discount of £65, at £5 per cent, is 3 5 0 The discount of £65, at £i per cent, is 1 12 6 The discount of 10s. at £7i per cent, is 0 0 9 The discount of 3s. 4.1. at £7 per cent, is 0 0 3 Ansr. £4 18 6 2. What is the discount of a hill of parcels, amounting to £8.17s. 8d. at 2i per cent? £. s. d. The discount of £8 is 0 4 0 The discount of 10. is. 0 0 3 The discount ol 6s. 8J. is 0 0 2 The discount of Is. is 0 0 OJ. Ansr. £0 4 5i N. B. When the rate per cent, is any even part of £100, it may be performed by dividing the amount by that even part. Case IX. To find the value of goods sold by particular quantities, viz: 1. by the score; 2. round timber; 3. by five score to the hundred; 4. by 112 to the hundred; 5. by 6 score to the hundred;-6. by the great gross; 7. by the 1000. j; 1. To fini the value of Goods sold by the score.«... The price of one is given, to find the price of one score. If thej'k'en price be shillings and pence, or only pence, divide the given pike in pence, by 12; the quotient will be the answer in pounds, Had.the remainder will be so many times Is. 8d. EXAMPLES. 2. At 4s. 9d. each, what is that per score? 4s. 9d. 12 1. At 9d. each, what i...
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