Bunuel wrote:
Bob invests 100 dollars in a fund that yields 15% simple interest monthly. If Bob invests the principal in the middle of January, which is the first month will he have more than $200 total?
(A) June
(B) July
(C) August
(D) February
(E) March
Kudos for correct solution.
Here he invested $100 in mid of January in a fund,which earn 15% interest every month
i.e Simple interest every month = $15
Now at the end of 6th month i.e July, the fund will have = (15*6) +100 = $90 +$100 =$190 (we have add $100, because we are calculating SI)
Therefore in the Month of August he will have = 190 +15 = $205 , hence it is more than $200
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