Expert: Lynn Houston - 5/25/2010

Question
25. During the first 20 miles of a 50 mile bicycle race, Roger's average speed was 16 mi/h.  What must his average speed be during the remainder of the race if he is to finish the race in less than 2.5 hours?  Greater than:

A.24 mi/h  C.8 mi/h
B.12 mi/h  D.4 mi/h

26. The length of a rectangular sheet of paper was twice its width.  After 1 cm was trimmed from all four edges of the sheet, the perimeter was at most 1 m.  Find the largest possible dimensions of the trimmed sheet.

A. 33.67 cm by 16.33 cm  C. 18 cm by 16 cm
B. 34 cm by 16 cm        D. 8 cm by 12 cm

Answer
25. During the first 20 miles of a 50 mile bicycle race, Roger's average speed was 16 mi/h.  What must his average speed be during the remainder of the race if he is to finish the race in less than 2.5 hours?  Greater than:

A.24 mi/h

26. The length of a rectangular sheet of paper was twice its width.  After 1 cm was trimmed from all four edges of the sheet, the perimeter was at most 1 m.  Find the largest possible dimensions of the trimmed sheet.

D. 8 cm by 12 cm