 | William Smyth - 1855 - 370 σελίδες
...in geometrical progression ; the first had £ 90 more than the last. How much had each? 5. There are three numbers in geometrical progression, the sum of the first and second of which is 9, and the sum of the first and third is 15. Eequired the numbers. 6. The sum of three... | |
 | George Farncomb Wright - 1857 - 98 σελίδες
...first and second is to the sum of the second and third as 1 to 2. Required the numbers. 26. There are three numbers in geometrical progression ; the sum of the first and second is 6, and the sum of the first and third is 10. Find the numbers. HARMONICAL PROGRESSION. EXERCISE... | |
 | William Smyth - 1858 - 344 σελίδες
...in geometrical progression; the first had £90 more than the last. How much had each? 5. There are three numbers in geometrical progression, the sum of the first and second of which is 9, and the sum of the first and third is 15. Kequired the numbers. 6. The sum of three... | |
 | John Fair Stoddard, William Downs Henkle - 1859 - 538 σελίδες
...difference between the third and fourth is 4. What are the numbers ? An*. 54, 18, 6, and 2. 14. There are three numbers in geometrical progression, the sum of the first and second of which is 9, nnd the sum of the first and third is 15. What are the numbers? Ans. 3, 6, and 12. 15.... | |
 | James Wharton - 1860 - 176 σελίδες
...number in the third ; and the whole number was 1938. How many were there in each flock ? (79.) There are three numbers in geometrical progression, the sum of the first and second of which is 9, and the earn of the first and third is 15. Required the numbers. (80.) There are four... | |
 | James Wharton - 1864 - 180 σελίδες
...number in the third ; and the whole number was 1938. How many were there in each flock? (79.) There are three numbers in geometrical progression, the sum of the first and second of which is 9, and the sum of the first and third is 15. Required the numbers. (80.) There are four... | |
 | Benjamin Greenleaf - 1866 - 336 σελίδες
...distant from it. Required the speed of each ? Ans. A's, 108 yards a minute ; B's, 162. 3Ï. There are three numbers in geometrical progression ; the sum of the first and second is 10, and the différence of the second and third is 24. What are the numbers ? Ans. 2, 8, and 32.... | |
 | Horatio Nelson Robinson - 1866 - 328 σελίδες
...extremes being multiplied by the mean, the product is 30 ; what are the numbers ? Ans. l, 3, and 9. 10. Of three numbers in geometrical progression, the sum of the first and last is 52, and the square of the mean is 100 ; what are tbe numbers ? Ans. 2, 10, 50. 11. There are... | |
 | Horatio Nelson Robinson - 1868 - 430 σελίδες
...extremes is to the sum of the means as 7 to 3. What are the numbers? Ans. l, 3, 9, and 27. 9. There are three numbers in geometrical progression ; the sum of the first and second is 20, and the difference of the second and third is 30. What are the numbers ? Ans. 5, 15, 45. 10.... | |
 | Edward Olney - 1873 - 354 σελίδες
...can finish the job in 60 days. In how many days can each, separately, reap an acre ? 12. There are three numbers in geometrical progression, the sum of the first and second of which is 9, and the sum of the first and third is 15. Eequired the numbers. SUG'S. — In solving... | |
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Of three numbers in geometrical progression, the sum of the first and second exceeds the third by 3, and the sum of the first and third exceeds the second by 21. 
