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Bob invested one half of his savings

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dvk007
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Bob invested one half of his savings [#permalink] New post   08 Jun 2019, 05:11
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Bob invested one half of his savings in a bond that paid simple interest for 2 years and received $550 as interest. He invested the remaining in a bond that paid compound interest (compounded annually) for the same 2 years at the same rate of interest and received $605 as interest. What was the annual rate of interest?

(A) 5%
(B) 10%
(C) 12%
(D) 15%
(E) 20%
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jelal123
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Re: Bob invested one half of his savings [#permalink] New post   09 Jun 2019, 08:07
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From the given info,
Simple as well as compound interest ( as compounded annually) for the first year will be 550/2= 275.
in the Second year, this interest i.e. 275 generated ( compound interest) the additional interest i.e. 605-(275+275)=55
No, interest 55is generated by 275 in one year is ONLY at 20% rate ( i.e. (55/275)*100).
20%
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Re: Bob invested one half of his savings [#permalink] New post   24 Oct 2024, 05:23
Hello from the GRE Prep Club BumpBot!

Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Bob invested one half of his savings [#permalink]
24 Oct 2024, 05:23
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