Henry Evers

Arithmetic, Embracing All the Rules Simple and Compound Henry Evers

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. 1878 Excerpt: ...questions. He will find none more intricate than those chosen as illustrations. Exercises.--XXIII. INTEREST PROBLEMS FORMING DOUBLE RULE OF THREE QUESTIONS. 1. At what rate per cent. did £909, 7s. 6d. amount to £1000, 6s. 3d. in 24 years f 2. In what time did £870 amount to £1085, 6s. 6d., at £5, 10a. pur cent. per annum? 3. What principal put out to interest will gain £73, 6s. 94d. in 2 years at 7 per cent.? 4. If £720 gain £108 in 3 years, what was the rate per cent. per annum? 5. What number of years were £620 let out to interest at £5, 10s. per cent., to amount to £654, 2s.? 6. What sum amounted to £110, 0s. 4fd. in 2 years 9 months, at 4 per cent. per annum? 7. The interest on £493, 16s. 8d. at 6 per cent. per annum is £49, 7s. 8d.; how long was it put out to interest? 8. In 2 years £193, 17s. 6d. gained £22, 5s. 10d.; what was the rate per cent. per annum? 9. What time were £383, 6s. 8d. put out to interest, when at 6 per cent. it amounted to £392, 10s. 8d. LEAST COMMON MULTIPLE AND GREATEST COMMON MEASURE. Least Common Multiple.--The hast common multiple of two or more numbers is the least number into which they will divide without leaving a remainder. Greatest Common Measure.--The greatest common measure of two or more numbers is the greatest number that will divide them without a remainder. The Least Common Multiple, generally written L. C. M., is the least number which contains two or more numbers exactly. The common plan to find the L. C. M. is to arrange the numbers in a line, and after examining them cross out any that are contained in the others, or that will divide into either of the others, without leaving a remainder. Then see what number generally 2, ...