
Li B. answered 09/29/15
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Experienced HS Teacher with Expertise in Math and Science
Let S = # of Students and A = # of Adults
S = A + 150
4730 = 3*S + 5*A
Substitute S into second equation:
4730 = 3*(A+150) + 5*A
Solve for A:
4730 = 3*A + 450 + 5*A
4280 = 8*A
A = 535 Adults
Solve for S:
S = A + 150 = 535 + 150 = 685 students