y + a = 108
14.5 y + 18.5 a = 1694
solve the system for y and a
multiplying by 14.5 ... 14.5 y + 14.5 a = 14.5 * 108
subtract equations to eliminate y
solve for a , then substitute back to find y
A museum charges $14.50 for a one day youth admission and $18.50 for a one day adult admission. One Friday, the museum collected $1694 From a total of 108 youths and adults . How many admissions of each type were sold?
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