Two typists of varying skills can do a typing job in 6 min, if they work together. If the first typist types alone for 4 min and then the second typist types alone for 6 min, they would be left with $\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$5$}\right.$ of the whole work. How many minutes would it take the slower typist to complete the typing job working alone?

In these tests you will find a question figure and four answer figures. You have to select one diagram from the answer figures which fits into the blank column in the question figure in order to complete it.

In these tests you will find a question figure and four answer figures. You have to select one diagram from the answer figures which fits into the blank column in the question figure in order to complete it.

In these tests you will find a question figure and four answer figures. You have to select one diagram from the answer figures which fits into the blank column in the question figure in order to complete it.