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کسی میتونه این سوال امتحان Q رو حل کنه البته با توضیح من نمیدونم چی میگه:
A group can charter a particular aircraft at a fixed total cost. If 36 people
charter the aircraft rather than 40 people, then the cost per person is greater by
$12. What is the cost per person if 40 people charter the aircraft?
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