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B's, and B's is triple of C's, and the sum of all their ages is 140. What is the age of each ? Ans. A's =84, B's =42, and C's =14.
Mathematics: Compiled from the Best Authors and Intended to be the Text-book ... - Page 350
1801 - 426 pages

An Introduction to Algebra: With Notes and Observations: Designed for the ...

John Bonnycastle - Algebra - 1782 - 226 pages
...it at firft? Anf. 120 guineas. n. A's age is double of B's, and B's is. triple pf C's, and the fum of all their ages is 140 ; what is the age of each ? Anf. A's— 84, B's— 42, anJC's=. 14. 12. Two perfons, A and B, lay out equal fums of money in...

An Introduction to Algebra: With Notes and Observations; Designed for the ...

John Bonnycastle - Algebra - 1806 - 234 pages
...it at firft ? Ans. 1 20 guineas. 11. A'S age is double of u's, and u's is triple of c's, and the fum of all their ages is 140 ; what is the age of each ? Ans. AJs=84, B's=42,sW €'5 = 14. 12. Two perfons, A and B, lay out equal fums of money in trade, A gains...

An Introduction to Algebra: With Notes and Observations: Designed for the ...

John Bonnycastle - Algebra - 1811 - 230 pages
...; what was in it at first ? Ans. 120 guineas. 11. As age is double of Bs, and Bs is triple of C's, and the sum of all their ages is 140; what is the age of each? Ans. A-«=84, B-»=42, and Cj=14. 12. Two persons, A and B, lay out equal sums of money in trade; A gains...

The Columbian Arithmetician: Or New System of Theoretical and Practical ...

Arithmetic - 1811 - 230 pages
...the number required. EXAMPLES. « A's age is double that of B, and B's triple that of C, and the fum of all their ages is 140 ; what is the age of each ?" fuppofe A's age - - - 48 then B's will be (|=) - - 2* and C's - - (i=) - - 8 80 refult. A. proof...

Samuel Webber - Arithmetic - 1812 - 260 pages
...any other number. , . • EXAMPLES. • •' ' • ' ' 1. A's age is double that of B, and B's isr triple that of C, and the sum of all their ages is 14O: what is .each per• son's agev? . • - , . Suppose As age to .be 60 •. Then will B's = *,»...

A Treatise on Algebra, in Practice and Theory: With Notes and ..., Volume 1

John Bonnycastle - Algebra - 1813 - 456 pages
...Ans. 7°8 for one, and £88 for the other ItX, A's age is double of B'S, and B'S is triple of c's, and the sum of all their ages is 140; what is the age of each? Ans. A'S 84, в'» 42, and c's 14 11. A person has 6 sons, each of whom is 4 years older than his next younger brother,...

An Introduction to Algebra: With Notes and Observations : Designed for the ...

John Bonnycastle - Algebra - 1818 - 284 pages
...each ? Ans. 708 for one, and 588 for the other 10. A's age is double of B'S, and B'S is triple of c's, and the sum of all their ages is 140 ; what is the age of each ? Ans. A'S 84, B'S 42, and c's 14 1 1 . Two persons, A and B, lay out equal sums of money in trade ; A gains 1262. and B loses 872.,...

An Introduction to Algebra: With Notes and Observations : Designed for the ...

John Bonnycastle - Algebra - 1818 - 326 pages
...708 for one, and 588 for the other 10. A's age is double of B'S, and B'S is triple of c'a, and (he sum of all their ages is 140 ; what is the age of «ach ? Ans. A'S 84, B'S 42, and c'a 14 11. Two persons, A and B, lay out equal sums of money in trade...