Let x = Horseback riding and y = Parasailing
Eq. 1
3x + 2y = 192
Eq. 2
2x + 3y = 213
By elimination:
2(3x + 2y = 192)
+ -3(2x + 3y = 213)
-5y = - 255
y = $ 51
Substitute y :
3x + 2y = 192
3x + 2(51) = 192
x = $ 30
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