单项选择题

ENROLLMENT FACULTY SIZE，FACULTY SALARY， AND TUITION AT COLLEGE R FOR SELECTED YEARS
Number of Students Enrolled	1，490	1，600	1，790
Number of Faculty members	166	160
Ratio of students to Faculty	—
Average* Faculty Salary	—	$14，360	$28，400
Tuition per Student	$1，400	$2，000	$3，700
Total Faculty Salaries	$1，245，000	—	$4.629，200
Income from Tuition	$2，086，000	$3，200，000	—

*Arithmetic mean

If the total amount of faculty salaries in1980 was paid from tuition income，approximately how much of each student’stuition was used to pay faculty salaries（）

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