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When soon do you have Rs. 60 if you are depositing Rs. 3 in First day and Rs. 3 in Second day....

+1 vote

You are depositing Rs. 3 in First day and Rs. 3 in Second day in your account. And you are withdrawing Rs. 4 from your account in Third day. You do this repeatedly. When soon do you have Rs. 60?

posted Oct 19, 2014 by Salil Agrawal

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2 Answers

+2 votes

Ans: 80 days

As he save Rs 2 per 3 days (3 + 3 - 4).
Rs 2 in 3 days
Rs 1 in = 3/2 days
Rs 54 in (3/ 2 )*54 = 78 day
As he deposited Rs 54 in 78days.

at 79th day he deposited 3 as usual = 54 + 3 = 57
at 80th day he deposited 3 as usual = 57 + 3 = 60

As he will only withdraw Rs 4 on 3rd days .. 81st day. which is not needed here, because he already have Rs 60 at 80th day.

answer Oct 20, 2014 by Arshad Khan
+2 votes

80 days needed

answer Oct 28, 2014 by Ankush Surelia

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