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26 Aug 2016, 07:19
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D
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Difficulty:
45%
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Question Stats:
63% (01:55) correct
37%
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wrong
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A call to Rosie’s Psychic Hotline costs $5.99 for the first 2 minutes and $1.99 for each additional minute. Stuart called the hotline for x minutes, where x is an integer. How many minutes long was the call?
(1) The total charge for the call was $11.96.
(2) The charge for the last 3 minutes of the call was $0.01 less than half the total cost of the call
(1) The total charge for the call was $11.96.
(2) The charge for the last 3 minutes of the call was $0.01 less than half the total cost of the call
26 Aug 2016, 07:36
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Bunuel
Total Cost = 5.99 + 1.99*(x-2)
1) Total cost = 11.96. We can find out the value of x easily by substituting total cost in the above equation. hence, Sufficient.
2) Last 2 minutes charge = (total/2)-0.1. We don't know the total cost. Also, even if we know the total cost, still we cannot find out the how many minutes were there before the last 3 minutes. hence, insufficient.
SO, answer is A.
27 Aug 2016, 03:57
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Total Cost = 5.99 + 1.99*(x-2)
A. 5.99 + 1.99*(x-2) = 11.96. We can solve for x. Hence, A is Sufficient.
B. The second condition holds true only if x>4. Now, as per the statement 1/2[5.99 +(x-2)1.99] - 0.01= 3*1.99. We can Solve for x. hence, B is also sufficient.
Answer is D.
A. 5.99 + 1.99*(x-2) = 11.96. We can solve for x. Hence, A is Sufficient.
B. The second condition holds true only if x>4. Now, as per the statement 1/2[5.99 +(x-2)1.99] - 0.01= 3*1.99. We can Solve for x. hence, B is also sufficient.
Answer is D.
