Infusing Mathematics into
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Brakes Work Example 9

WorkKey Level: 3
NATEF Automotive Tasks: V.A

You are replacing a brake line that is 35 inches long.  The brake lines you have on hand are of varying lengths: 24 inches, 12 inches, 6 inches, and 4 inches.  Which of the following combination of lengths will provide you with a length greater than (>) or equal to (=) 35 inches in the fewest number of pieces?

a.  24"          12"

b.  12"          12"

c.  12"          12"          12"

d.  24"           6"            6"

Solution:

Options A, C, and D all provide enough line since all total 36-inches which is greater than 35-inches.

Since the question asks for the option with the fewest number of pieces, the correct answer is A which uses only two pieces. Options C and D both use three pieces.




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