contestada

university theater sold 465 tickets for a play. ticket cost $23 per adult and $13 per senior citizen. if total receipts were $7145, how many senior citizen tickets were sold

Respuesta :

wegnerkolmp2741o

a=adult tickets


s = senior tickets


a+s=465       a = 465-s


23a + 13s = 7145


substitute in a = 465-a


23 (465-s) + 13s = 7145


distrubute


10695 - 23s +13s =7145


combine like terms


10695 - 10s = 7145


subtract 10695 from each side


-10s = -3550


divide by -10


s = 355


senior tickets sold 355



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