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Start the planA. 1,500 - x + 2y
B. 1,500 - x + 2z
C. 1,500 - x - y + z
D. 1,500 - x - y - z
E. 1,500 - x - z
The OA is E.
1500 attended, and x are from town A
=> 1500-x people attended the marathon who are not from town A;
z participated in the marathon who are not from town A
hence those who did not participate and not from town A
= (1500−x) -z
Option E.
Has anyone another strategic approach to solve this PS question? Regards!














