.436 9 6 3 1309 8 6 218 4 9 15.27 13 3 20 5.53 12 6.32 4. 1.56 Ans. 15 5 6 10. Required the commission on D.649 75c at 14 per cent. || 649-75 162-4375 1137-0625 Ans. D.11 37c. Ogm. BROKERAGE Is an allowance of so much per cent. to a person called a Broker, for assisting merchants in purchasing or selling goods. 11. Required the Brokerage on £911 12s. at 5s. or 4 per cent. 5s911 12 2.27 18 20 5.58 Ans. 21. 5s. 6d. -- 6.96 3.84 12. Required the Brokerage on D.876 21c. at 33 cents, or at } 292 07 Ans. D.2 92c. 0m. BUYING AND SELLING STOCKS. Stock is a general name for the capitals of trading companies. 13. Required the amount of .375 15s. 93 amount of D.2195 50c. bank stock, at 125 | 25 Add | 2195.50 Ans. D.2744-375 ΤΟ TO CALCULATE INTEREST FOR DAYS. RULE 1.-Multiply the principal by the days, and that product by the rate on the pound, and divide the last product by 365. 15. Required the interest of £.360 10s. for 175 days, at 6 per cent. 360 5x175x-06 Rule for making a Divisor for any Rate. Multiply 365 by 100, and divide by the rate. Thus, for 6 per RULE 2. Multiply the principal by the days; divide by 6083 for 6 per cent, and 7300 for 5 per cent. (the days in which any sum will double at those rates) and the quotient is the interest. For months, multiply the principal by them, and divide by 200 for 6 per cent. or 240 for 5 per cent. (the months in which any 'sum will double at those rates) and the quotient is the answer. Hence, when interest is to be calculated on cash accounts, or accounts current, where partial payments are made, or partial debts contracted; multiply the several balances into the days they are at interest, which should be done at every transaction, and the sum of these products divided by 6083 and 7300 will give the interest at 6 and 5 per cent. For any other rate, make the proper addition or deduction, or find a divisor as before directed. When partial payments are made at short periods, subtract the several payments from the original sum in their order, placing their dates in the margin. 16. Suppose a bill of D.359 was due January 1, 1807; that D.75 was paid February 3d. D.50 March 5th, D.80 April 9th, and June 7th, D.145: What interest is due ? After the dates are placed in the margin, the number of days in each of those periods is to be computed and marked against its res pective sum lastly, divide the sum of the products by 6083, &c. Interest on acconnts current is calculated nearly in the same man ner. 17. Compute the interest at 6 per cent, on the following account, to August 10th. Dr. Mr. A. Jones, his account current, with B. Carr, 1807. Cr. D. 1807. D. Here the sums on either side are introduced according to the order of their dates; those on the Dr. side are added to the former balance, and those on the Cr. side subtracted. Before we calculate the days, we try if the last sum D.250 be equal to the balance of the account, which proves the additions and subtractions. And before multiplying we try if the sum of the column of days be equal to the number of days from January 1 to August 10. 17. Required the interest on the following account, from December 31, 1806, to Dec. 31, 1807; allowing 5 per cent. when the balance is due to A. and 6 per cent. when due to B.? Dr. 1806. C.D. | D. | Ds. | Dr. Products. | Cr. Products. Cr. D. 70 300 240 10 Interest due B. at 6 per cent. Balance due A, In this account the balance is sometimes to one party, and sometimes to the other. These charges are distinguished by Dr. and Cr. When payments are made on bonds, notes, &c at considerably distant periods, it is usual to calculate the interest to the date of each payment, and add it to the principal, and then subtract the payment from the amount. 18. A note was given for D.540 the 18th August, 1804, and there was paid the 19th of March, 1805, D.50, and the 19th of Decem ber, ber, 1805, D.25; and the 23d of September, 1806, D.25; and the 18th of August, 1807, D.110: Required the interest, and balance due on the 11th of November, 1807? A note given 18th August, 1804, for Paid 19th March, 1805, Balance due 19th March, 1805, D.540 19.352 559.352 50 509.352 t. per 19. A. owes B. the following sums, with interest at 6 per cent. annum: D.60 for 7 months, D.150 for 9 months, D.75.50 for 3 months, D.365-25 for 8 months, and 510-20 for 5 months: Required the amount ? 20. A note for D.1000 is given January 1, 1803, with interest at 6 per cent. per annum; February 19, 1803, D.100 are paid; June 7, 1803, D.150; April 14, 1804, D.37.50; July 11, 1804, D.75 ; Sept. 29, 1804, D.250; Dec. 17, 1805, D39; March 4, 1806, D.175; Aug. 7, 1806, D.105; Oa. 30, 1806, D.50; May 12, 1807, D.40, and Nov. 17, 1807, D.72: How much is due, January 1, 1808 ? SIMPLE, 1 |