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21 Jun 2017, 00:34
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Difficulty:
15%
(low)
Question Stats:
80% (01:40) correct
20%
(01:43)
wrong
based on 1452
sessions
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For a basic monthly fee of F yen, Noako's first cell phone allowed him to use a maximum of 420 minutes on calls during the month. Then, for each of x additional minutes he used on calls, he was charged M yen, making his total charge for the month T yen, where T = F + xM. What is the value of F?
(1) Naoko used 450 minutes on calls the first month and the total charge for the month was 13,755 yen
(2) Naoko used 400 minutes on calls the second month and the total charge for the month was 13,125 yen
ID: DS19199
Similar question from previous editions: for-a-basic-monthly-fee-of-f-yen-noak-s-first-cell-phone-allowed-him-221747.html
(A) Statement 1 alone is sufficient, but statement 2 alone is not.
(B) Statement 2 alone is sufficient, but statement 1 alone is not.
(C) Both statements together are sufficient, but neither alone is sufficient.
(D) Each statement alone is sufficient.
(E) Neither statement is sufficient, even when combined.
(1) Naoko used 450 minutes on calls the first month and the total charge for the month was 13,755 yen
(2) Naoko used 400 minutes on calls the second month and the total charge for the month was 13,125 yen
ID: DS19199
Similar question from previous editions: for-a-basic-monthly-fee-of-f-yen-noak-s-first-cell-phone-allowed-him-221747.html
(A) Statement 1 alone is sufficient, but statement 2 alone is not.
(B) Statement 2 alone is sufficient, but statement 1 alone is not.
(C) Both statements together are sufficient, but neither alone is sufficient.
(D) Each statement alone is sufficient.
(E) Neither statement is sufficient, even when combined.
Solving this question helps.
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21 Jun 2017, 01:55
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B...
1. 13755 = F + (Max(450-420,0)) *M...Insuff
2. 13125 = F + (Max(400-420,0)) *M...Suff
1. 13755 = F + (Max(450-420,0)) *M...Insuff
2. 13125 = F + (Max(400-420,0)) *M...Suff
sashiim20
Joined: 04 Dec 2015
Last visit: 05 Jun 2024
Posts: 608
Given Kudos: 276
Location: India
Concentration: Technology, Strategy
Schools: ISB '19 IIMB IIMA XLRI HEC Sept19 intake Rotman '21 NUS '21 NTU '20 Trinity MBA '20 Bocconi '21 Smurfit "21
WE:Information Technology (Consulting)
Schools: ISB '19 IIMB IIMA XLRI HEC Sept19 intake Rotman '21 NUS '21 NTU '20 Trinity MBA '20 Bocconi '21 Smurfit "21
Posts: 608
21 Jun 2017, 02:11
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Bunuel
(1) Naoko used 450 minutes on calls the first month and the total charge for the month was 13, 755 yen
T = F + xM . (1) gives value of T and x (450 - 420 = 30 additional mins). Does not give value of M or F. ---------- (I is Not Sufficient)
(2) Naoko used 400 minutes on calls the second month and the total charge for the month was 13, 125 yen
T = F + xM
F is the basic monthly fee which gives 420 mins free calls.
x and M is not required, Naoko used only 400 mins.
Therefore; T = F = 13,125. -------------- (II is Sufficient) . Answer (B) ...
