SAT Math · Linear inequalities in one or two variables · easy
A shipping company charges no more than 80 per package. The base fee is 15, plus $6.50 per pound. What is the maximum whole number of…
A shipping company charges no more than $80 per package. The base fee is $15, plus $6.50 per pound. What is the maximum whole number of pounds a package can weigh?
Answer and explanation
Answer: B: 10
The total charge for a package of pounds is , and it must not exceed $80: . Subtract 15: . Divide by 6.5: . The maximum whole number of pounds is 10, choice B, and the cost is exactly $80. Choice A (11) would cost $86.50, over the limit. Choice C (9) is allowed but is not the maximum. Choice D (13) results from forgetting the base fee: , then rounding up. Include the base fee before dividing.
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