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Bunuel
Laura borrowed $240, interest free, from her parents to pay for her college education. If she pays back 5/2 percent of this amount quarterly, and has already paid $42.00, for how many months has she been paying back her loan?

(A) 6
(B) 7
(C) 19
(D) 21
(E) 24

Monthly payback = 5/2*240/100 = 6$
42$ paid till now which means 42/6 = she has paid the money 7 times
Since the amount is paid quarterly, the total number of months she has been paying back her loan is 7*3 = 21 months

Hence option D is correct
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Bunuel
Laura borrowed $240, interest free, from her parents to pay for her college education. If she pays back 5/2 percent of this amount quarterly, and has already paid $42.00, for how many months has she been paying back her loan?

(A) 6
(B) 7
(C) 19
(D) 21
(E) 24

5/2 percent of $240 is (5/2)/100 x 240 = 5/2 x 2.4 = 12/2 = $6. Thus, she pays $6 every 3 months. Since 42/6 = 7, she’s been paying off her loan for 3 x 7 = 21 months.

Answer: D
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Bunuel
Laura borrowed $240, interest free, from her parents to pay for her college education. If she pays back 5/2 percent of this amount quarterly, and has already paid $42.00, for how many months has she been paying back her loan?

(A) 6
(B) 7
(C) 19
(D) 21
(E) 24


Given,
Amount Borrowed = $240

Amount paid back every quarter = (5/2)% of 240 = (5/2)*(1/100)*240 = $6

Amount paid back so far = $42

Therefore, # of quarters taken to pay back $42 = 42/6 = 7

Hence # of months Laura has been paying back her loan = 7 * 3 = 21 months

Answer D.


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GyM
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Given: Laura borrowed $240, interest free, from her parents to pay for her college education.

Asked: If she pays back 5/2 percent of this amount quarterly, and has already paid $42.00, for how many months has she been paying back her loan?

Quarterly payment = 5/2% of $240 = $6
Monthly payment = $6/3 = $2

Number of months = $42/$2 = 21 months

IMO D
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