...per cent. ; what is it for 2 years ? For 3 ? For 5 ? For 7 ? Fo.- 9 ? For 12 ? For 20 ? 10. If 6 men can do a piece of work in 12 days, how long will it take 1 man to do the same ? (1 man will be, G times as lonfе as 6.) How long will it take 2 men ? (2 men...

...per cent. ; what is it. for 2 years ? For 3 ? For 5 ? For 7 ? For!)? For 12? For 20 ? Hi. If G men can do a piece of work in 12 days, how long will it tak« 1 man to do the same ? (1 man mill, he 6 times as IVHI/ as 6.) How long will it take 2 men ?...

...per cent. ; what is it for 2 years ? For 3 ? For 5 ? For 7 ? For 9 ? For 12 ? For 20 ? 16. If 6 men can do a piece of work in 12 days, how long will it takn 1 man to do the same ? (1 man will be 6 times аз long as 6.) How long will it take 2 men ? (2...

...2. If 2 men can build a wall in 9 days : in what time could 6 men build it? ANS. 3 days. 3. If 6 men can do a piece of work in 12 days : how long will ¡' take 12 men to do it ? ANS. 6 days. 4. If a field will keep 2 cows 20 days : how long will it keep...

...at 6 per cent ; whatis it for 2 years ? For 3 ? For 5 ? For 7 ? For 9? For 12? For 20? 16. If 6 men can do a piece of work in 12 days, how long will it take 1 man to do me same ? (1 man will be six times as long as 6.) How long will it take 2 men ? (2 men...

...since, while instructing a class in mental Arithmetic, thus solved the following example: If 3 men can do a piece of work in 12 days, how long will it take 4 men to do the same ? SOLUTION. If 3 men can do a piece of work in 12 days, 1 man can do it in £ of...

...at 6 r cent. ; what is it for 2 years ? For 3 ? For 5 ? For 7 ? or 9? Fnr 12? For 20? lo. If 6 men can do a piece of work in 12 days, how long will il take 1 man to do the same : (1 man will he six times as long as 6.) How long will it take 2 men...

...39. What will 11 dozen of eggs cost, at 10 cents a dozen ? At 11 cents ? At 12 cents ? 40. If 12 men can do a piece of work in 12 days, how long will it take one man ? LESSON XII. 1. Pour times three are how many ? 2. Three times two are how many ? 3. Seven...

...39. What will 11 dozen of eggs cost, at 10 cents a dozen ? At 11 cents ? At 12 cents ? 40. If 12 men can do a piece of work in 12 days, how long will it take one man ? LESSON XII. 1. Four times three are how many ? 2. Three times two are how many ? 3. Seven...

...since, while instructing a class in mental Arithmetic, thus solved the following example : If 3 men can do a piece of work in 12 days, how long will it take 4 men to do the same ? " Solution. — If 3 men can do a piece of work in 12 days, 1 man can do it in...