Astore clerk makes a display with boxes of pens and pencils . the display contains 56 pens and 32 pencils . each box holds only pens or only pencils. each box holds the same number of pens or pencils . what is the greatest possible number of pens or pencils that the clerk can put in each box?

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?