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Hi
Let x and (x-$142.50) represent the gate on Sat and Wed respectively
Question states***
x + (x-$142.50) = $5182.50
Solving for x
2x = $5325.00
x = $2662.50, on Sat. $2520 on Wed.
CHECKING our Answer***
$2662.50 + $2520 = $5182.50