-4- In a board exam- the pass percentages of a certainnschool the past three years are - 87 - - 90 - - - andn92- - - - If 400 students appear the exam everynyear- then how many students have passed thenexam in the past three years-

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"4. In a board exam, the pass percentages of a certain\nschool for the past three years are \$ 87 \\% , 90 \\% , \$ and\n92\$ \\% \$ . If 400 students appear for the exam every\nyear, then how many students have passed the\nexam in the past three years?"

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"4. In a board exam, the pass percentages of a certain\nschool for the past three years are \\( 87 \\% , 90 \\% , \\) and\n92\\( \\% \\) . If 400 students appear for the exam every\nyear, then how many students have passed the\nexam in the past three years?"