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18. If Eric can clean a room in 5 hours and Clayton can
clean the same in 10 hours, how many hours would
they take doing the job together?
(A) 15
(B) 3 1/3
(C) 50
(D) 3/10
(E) 2
19. Adren drives 50 miles to his destination at an average
speed of 25 miles per hour and makes a return
trip at an average rate of 50 miles per hour. What
is his average speed in miles per hour for the
entire trip?
(A) 33 1/3
(B) 75
(C) 37˝
(D) 16 2/3
(E) 33 2/3
20. The freezer in a refrigerator is 9 inches deep, 6 inches
wide and 8 inches long. How many ice cubes
will it hold if each cube is 2 inches on each
edge?
(A) 84
(B) 48
(C) 24
(D) 932
(E) 72
21. To find the radius of a circle whose area is 154...
(A) divide it by 2p
(B) divide it by 7p
(C) multiply it by 7p
(D) multiply it by 2p
(E) divide it by p
22. (x + 11) (x - 7)
(A) 4x
(B) x2 - 77
(C) x2 + 4x - 77
(D) -7(x + 11) + 11(x -7)
(E) x2 + 4
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