SAT Math · Linear inequalities in one or two variables · easy
A moving truck rental costs no more than 150 per day. The base fee is 40, plus $22 per hour of use. What is the maximum number of whole…
A moving truck rental costs no more than $150 per day. The base fee is $40, plus $22 per hour of use. What is the maximum number of whole hours the truck can be used?
Answer and explanation
Answer: C: 5
Write the cost as and require it to be at most $150: . Subtract 40: . Divide by 22: . The maximum whole number of hours is 5, choice C. Check: 5 hours cost , exactly the limit, while 6 hours would cost $172. Choice A (6) overshoots the budget. Choice B (4) is allowed, but it is not the maximum. Choice D (7) results from forgetting the base fee: , then rounding up. Include the fixed fee before dividing.
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