 | Isaac Dalby - 1806 - 526 páginas
...the first ingot, 9 of the second, and 3 of the third. 19. If 11320 he divided into 3 parts such, that the sum of the first and second is to the sum of the second and third as 7 is to 9; ' and the difference of the first and second is to the sum of the first and third, as l... | |
 | Miles Bland - 1821 - 898 páginas
...second of which is 9, and the sum of the first and third is 15. Required the numbers. Ans. 3, 6, 12. 9. There are three numbers in geometrical progression;...and second is to the sum of the second and third as i to 2. Required the numbers. Am. 2, 4, s. 10. There are three numbers in geometrical progression,... | |
 | James Ryan - 1824 - 550 páginas
...Ans. 25, and 15 yards. Prob. 7. There are three numbers in arithmetical progression, whose sum is 21 ; and the sum of the first and second is to the sum of the second and third as 3 to 4. Required the numbers. Ans. 5, 7, 9. Prob. 7. The arithmetical mean of two number? exceeds the... | |
 | James Ryan, Robert Adrain - 1824 - 542 páginas
...Ans. 25, and 15 yards. Prob. 7. There are three numbers in arithmetical progression, whose sum is 21 ; and the sum of the first and second is to the sum of the second and third as 3 to 4. Required the numbers. Ans. 5, 7, 9. Prob. 7. The arithmetical mean of two numbers exceeds the... | |
 | Miles Bland - 1824 - 404 páginas
...Geometrical Progressions. 1 . There are three numbers in arithmetical progression, whose sum is 21 ; and the sum of the first and second is to the sum of the second and third as 3 to 4. Required the numbers. Ans. 5, 7, 9. 2. There are six towns in the order of the letters, A,... | |
 | Charles Tayler - 1824 - 350 páginas
...ANS. ^5,825. 8s. 5±d. Ex. 7. There are three numbers in geometrical progression, whose sum is 52, and the sum of the first and second is to the sum of the first and third as 2 : 5. Required the numbers ? ANS. 't, 12, 36. Ex. 8. A bookseller being asked the... | |
 | James Ryan - 1826 - 430 páginas
...yards. Prob. 6. There are three numbers in arithmetical progression, whose sum is 21 ; and the sam of the first and second is to the sum of the second and third as 3 to 4. Required the numbers. . Ans. 5, 7, 9, Prob. 7. The arithmetical mean of two numbers exceeds... | |
 | John Bayley (fellow of Emmanuel College, Cambridge.) - 1830 - 428 páginas
.... '. xy= 12 Also 3x + 3лу = Wxy . • . 3+3у2 = l0y, &c. y=3, The numbers are 4, 12, 36. *r*z~3 There are three numbers in geometrical progression,...and second is to the sum of the second and third as 1:2. Find the numbers. Let x, xy, xy' be the numbers, x+xy : xy+xyг :: 1 : 2 .'. 1+y : y +j^:: 1 :... | |
 | William Smyth - 1830 - 278 páginas
...question, we obtain z = 3 or 10. 4. There are three numbers in arithmetical progression, whose sum is 21 ; and the sum of the first and second is to the sum of the second and third as 3 to 4. Required the numbers! Ans. 5, 7, 9. 5. From two towns, which were 168 miles distant, two persons... | |
 | James Bryce - 1837 - 322 páginas
...than the last. How much had each? Ans. £120, £60, £30. 23. Of three continual proportionals the sum is 14, and the sum of the first and second is...third as 1 to 2. Required the numbers. Ans. 2, 4, 8. 24. From two towns 168 miles distant, two persons, A and B, set out to meet : A went 3 miles the first... | |
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There are three numbers in geometrical progression, whose sum is 14, and the sum of the first and second is to the sum of the second and third as 1 to 2 ; required the numbers. Ans. 
