 | Francis Walkingame - 1832 - 224 pages
...money would discharge a debt of ,£105 to be paid a year to come, rebate being made at S per cent. RULE. As £100 with the interest for the time given : is to that interest : : so is the sum given to the rebate required. Subtract the rebate from the given sum,... | |
 | mrs. Henry Ayres - Arithmetic - 1843 - 470 pages
...which I shall show you by example. The discount subtracted from the given sum leaves the present worth. Rule. — As 100/., with the interest for the time given, is to the interest, so is the sum given, to the discount required. Examples. 1. What is the discount of 100/.... | |
 | Francis Walkingame - 1855 - 186 pages
...money would discharge a debt of £105 to be paid a year to come, discount being made at 5 per cent. RULE. As £100, with the interest for the time given : is to the sum given : : so is the interest to the discount required. Subtract the discount from the given sum,... | |
 | David Price - Arithmetic - 1858 - 264 pages
...the discount. II. To find the present worth. RULE. — As the amount (by Interest) of £100, or $100, is to the given sum, so is 100 to the present worth. IH^1* Subtract the present worth from the given sum, and the remainder will be the discount ; or, subtract... | |
 | Francis Walkingame - 1868 - 154 pages
...given time at the given rate. Three days (called Days of Grace) are always added to the time of a bill. RULE. — As £100 with the interest for the time given is to the sum given, so is that interest to the discount required. Subtract the discount from the given sum,... | |
 | Robert Potts - Algebra - 1879 - 672 pages
....'. p= ,.' ~ =-p> which pves the rule. As the amount of £100 for the given time at the given rate is to the given sum, so is £100 to the present worth. In calculating by compound interest, the amount at the end of the first year becomes the principal... | |
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RULE. As £100, with the interest for the time given : is to the sum given : : so is the interest to the discount required. 