Abdul, Barb, and Carlos all live on the same straight road…

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Last Updated on May 11, 2023

GMAT OFFICIAL GUIDE PS

Solution:

Since the school is 4 miles from Carlos’s house, and Barb’s house is halfway between the school and Carlos’s house, Barb’s house is 2 miles from the school.

Since the school is halfway between Abdul’s house and Barb’s house, the school is 2 miles from Abdul’s house.

Thus, Abdul’s house is 2 + 4 = 6 miles from Carlos’s house.

Answer: D

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