.
How the problem is worded, it makes me scared.
Probably, you want to say that the restaurant buys the meal outside (from the source) at the buying price of $5.75
and sales to the customers at $7.00.
If so, then the equation is
7.00x = 148.75 + 5.75x.
The solution is
x = = 119 meals. ANSWER
Solved.
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Who is the "problems composer" on your side ?
He (or she) really needs a helper, who will edit after him (or her) . . .