10
Answer: CSet 4: Systems of Equations (Intermediate)
Explanation
A company makes T-shirts with fixed costs of $600/day and variable cost of $8 per shirt. Shirts sell for $15. How many must be sold daily to earn a profit of $350?
A.
120 shirts
B.
130 shirts
C.✓ Correct
135 shirts
D.
140 shirts
Detailed Explanation
Choice C is correct. Choice C is the correct answer. Let = number of shirts. Profit equation: Revenue - Total Cost = Profit $$$15x - (600 + 8 x) = 3507x = 950$x = \frac{950}{7} \approx 135.7$$ Rounding down: 135 shirts (can't sell fractional shirts) Strategic Tip: Profit = Revenue - (Fixed Costs + Variable Costs). Other choices based on calculation.
Key Steps:
•
The correct answer is 135 shirts
Why others are wrong:
A: Choice A is incorrect and may result from a calculation error.
B: Choice B is incorrect and may result from a calculation error.
D: Choice D is incorrect and may result from a calculation error.
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