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Bunuel
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240*2.5% =6for each semi annual year
21/6=3.5 half year
3.5*6=21 months is right ans
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As Foreheadson pointed out, the payments can only be made every six months. So, to pay back $21, it would take 4 six month periods.

4 x 6 = 24 months

Answer E

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Bunuel
A $240 interest-free loan is to be paid back in equal monthly payments. If a total of 2.5% percent of the original amount of the loan is paid back semi-annually, then how many months will it take to pay back $21.00 ?

A. 6
B. 7
C. 18
D. 21
E. 24

Many of you missed the fact that the loan was paid back in equal monthly instalments.


\(\frac{2.5}{100}*240 = 6\)

Hence \($6\) is paid in \(6\) months i.e. \($1 \) is paid per month.

Hence for \($21 \), we will need \(21\) months.

Ans-D

Hope it's clear.
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(25/1000)*240$= 6$ in 6 months
=> 1$ in 1 month
=> 21$ in 21 months
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