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01 Jul 2018, 21:22
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D
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Difficulty:
65%
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Question Stats:
58% (01:58) correct
42%
(02:08)
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A car rental company reduced its rates on all cars. If car A's reduced rate is $38 per day, what was car As rate before the reduction?
(1) If the original rate for a car was over $35 per day, then its reduced rate is 66 percent of its regular rate.
(2) Before the reduction, car B's rate was $3 per day more than car A's, and after being reduced by the same percent as car A, its reduced rate became $40 per day.
(1) If the original rate for a car was over $35 per day, then its reduced rate is 66 percent of its regular rate.
(2) Before the reduction, car B's rate was $3 per day more than car A's, and after being reduced by the same percent as car A, its reduced rate became $40 per day.
01 Jul 2018, 22:45
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Bunuel
To answer the question we need to know by how much the old rate was reduced.
We'll look for statements that give us this information, a Logical approach.
(1) Since the reduced rate is $38, the original must be higher than $38 meaning that it is more than $35. So we know that is was reduced by 66% and can calculate.
Sufficient.
(2) Let's write this down as equations so its easier to understand:
orig_b = orig_a + 3
orig_b * reduction = 40
orig_a * reduction = 38
This is 3 equations with 3 variables, meaning it has one solution. So we can solve for the original value of car A.
Sufficient.
(D) is our answer.
01 Sep 2024, 22:15
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(1) If the original rate for a car was over $35 per day, then its reduced rate is 66 percent of its regular rate.
For statement 1) How do you know it means the car company in the question? What if it is another company which may have different reduced rate compared to the car company in the question.
For statement 1) How do you know it means the car company in the question? What if it is another company which may have different reduced rate compared to the car company in the question.
