penguinformeoz0w5c penguinformeoz0w5c

08-02-2018
Mathematics

contestada

Cost of tickets is 90. 7 adult tickets and 12 kids tickets. Kids tickets 2/3 the adult ticket. How much are adult tickets

Respuesta :

RayDansh RayDansh

08-02-2018

7x+12y=90
y = 2/3x

15x=90
x = 6
6 dollars

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