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... 161. 30 men can perform a piece of work in 20 days ; how many men will it take to perform the same work in 8 days ? 162.
Intellectural Arithmetic, Upon the Inductive Method of Instruction - Σελίδα 140
των Warren Colburn - 1847 - 160 σελίδες
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## Daboll's Schoolmaster's Assistant: Improved and Enlarged : Being a Plain and ...

Nathan Daboll - 1813 - 240 σελίδες
...persons 5 months, how much will be sufficient for 4 perlons IM months? Ans. 24 bushels. 8. If 30 men perform a piece of work in 20 days ; how many men will accomplish another piece of work 4 times as large in a fifth part of the time ? 60 : 20 : : I 4 : :...

## Daboll's Schoolmaster's Assistant: Improved and Enlarged. Being a Plain ...

Nathan Daboll - 1818 - 240 σελίδες
...persons 5 months, how much will be sufficient for 4 persons 12 months ? Ans. 24 bushels. 8. If 3(J men perform a piece of work in 20 days ; how many men will accomplish another piece of work 4 times as large in a fifth part of the time ? S0 : 20 : : 1 4 : :...

## Elements of Arithmetic

Etienne Bézout - 1824 - 219 σελίδες
...days, how many bushels will serve 60 horses 36 days, at the same rate ? Ans. 60 bushels. 6. If 30 men perform a piece of work in 20 days, how many men will execute another piece, 4 times as large, in a fifth part of the time? Ans. 600 men. 7. What principal...

## First Lessons in Arithmetic: On the Plan of Pestalozzi, with Some Improvements

Warren Colburn - 1825 - 172 σελίδες
...many months' board can I have for 100 dollars ? 160. A ship has sailed 24 miles in 4 hours ; how long will it take her to sail 150 miles at the same rate...162. 17 men can perform a piece of work in 25 days ; in how many days would 5 men perform the same work 1 163. A hare has 76 rods the start of a greyhound,...

## Daboll's Schoolmaster's Assistant, Improved and Enlarged

Nathan Daboll - 1825 - 240 σελίδες
...persons 5 month*, how much will be sufficient for 4 persons 12 months ? Ans. 24 bushels. 8. If 30 men perform a piece of work in 20 days ; how many men will accompli-h another piece of work 4 times as large in a fifth part of the time f П0 : 20 : : 1 4 :...

## Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method ...

Warren Colburn - 1826 - 172 σελίδες
...many months' board can I have for 100 dollars ? 160. A ship has sailed 24 miles in 4 hours ; ho v long will it take her to sail 150 miles at the same rate?...30 men can perform a piece of work in 20 days ; how many^en will it take to perform the same work in 8 days ? .'* 162. 17 men can perform a Apiece of work...

## Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method ...

Warren Colburn - 1827 - 172 σελίδες
...many months' board can I have for 100 dollars ? 160. A ship has sailed 24 miles in 4 hours ; how long will it take her to sail 150 miles at the same rate?...162. 17 men can perform a piece of , work in 25 days ; in how many days would 5 men perform the same work ? 163. A hare has 76 rods the start of a greyhound,...

## Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method ...

Warren Colburn - 1828 - 160 σελίδες
...sailed 24 miles ih •! hours ; how long will it take her to sail 150 miles at the same G .•..-/ rate ? ( \$ •/. 161. 30 men can perform a piece of work in 20 days ; how many men wiir jt take to perform the same work in 8 days ? jy \ • 162. 17 men can perform a piece of work...

## Intellectual Arithmetic: Upon the Inductive Method of Instruction

Warren Colburn - 1828 - 172 σελίδες
...months' board can I have for 100 dollars ? -- 160. A ship has sailed 24 miles in 4 hours ; how long will it take her to sail 150 miles at the same rate? 1 161. 30 men can perform a piece of work in 2O days ; how many men will it take to perform the same...

## Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method ...

Warren Colburn - 1829 - 172 σελίδες
...many months' board can I have for 100 dollars ? 160. A ship has sailed 24 miles in 4 hours ; how long will it take her to sail 150 miles at the same rate...can perform a piece of work in 20 days ; how many rne'r: wiil it take to perform (he same work in S days : 162. 17 men can perform a piece of work in...