 | Ernst Rudolph Breslich - Mathematics - 1909 - 402 pages
...n=2\\ It is clear that numbers other than 5 and 7 would be used just as the 5 and 7 are used here. 2. A can do a piece of work in a days and B in b days. How long will it take them to do it together ? Let n be the number of days it will take them together... | |
 | George Albert Wentworth, David Eugene Smith - Algebra - 1913 - 310 pages
...and J + î = the part that both together can do in 1 da. Therefore _.)._ = _. 4 5 x Solving, x = Ц. 2. A can do a piece of work in a days and B can do it in b days. How many days will it take both together to do the work ? Evaluate the result... | |
 | Ernst Rudolph Breslich - Mathematics - 1915 - 408 pages
...7n+5n = 35 It is clear that numbers other than 5 and 7 would be used just as the 5 and 7 are used here. 2. A can do a piece of work in a days and B in 6 days. How long will it take them to do it together ? Let n be the number of days it will take them... | |
 | Ernst Rudolph Breslich - Logarithms - 1917 - 408 pages
...silver is contained in a mass of gold and silver that weighs 80 Ib. in air and 72J Ib. in water ? J36. A can do a piece of work in a days and B in 6 days. How long will it take them to do it working together ? Use the result to solve problem 5. J37.... | |
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... 2. A can do a piece of work in a days and B in b days. 
