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Person X 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, interest being compounded annually, for the same 2 years at the same rate of interest and received $605 as interest. What was the value of his total savings before investing in these two bonds?
$ 5500 $ 11000 $ 22000 $ 2750 $ 44000
Could someone provide solution to this problem ? Thanks.
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Person X 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, interest being compounded annually, for the same 2 years at the same rate of interest and received $605 as interest. What was the value of his total savings before investing in these two bonds?
$ 5500 $ 11000 $ 22000 $ 2750 $ 44000
Could someone provide solution to this problem ? Thanks.
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let the total investment be 2P . R be the rate of interest. Time is 2years
Under SI, P will amount to P (1+ 2R/100)= P(1+ 0.02R) = P + 550- --eqn 1 eqn1 on simplifying becomes 0.02*P*R = 550 or 0.01*P*R =275
Under CI, P will amount to P (1+ R/100)^2 =P(1+ 0.01R)^2 = P + 605----eqn2
The SI for each year will be $275 (550/2) so compound interest in year 2 will be nothing but SI on amount $(P+275) at R rate of interest. CI for 2years will be $275 + SI on (P+275) = 605 solving above we get P+275 is 330 Then (P+275)* 0.01R = 0.01*P*R + 2.75R = 330---eqn3 and we have 0.01*P*R =275 substituing this in equation3 we get 2.75R = 55 R = 20% then 2P can be obtained as 2*0.01*P*20 = 275 2P = 2*27500/20 = $2750
Ans Option4. $2750
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.