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Question

Write 'T' for true and 'F' for false

(i) Simple interest on Rs x for x years is Rs x. Then, the rate of interest is x% per annum.
(ii) Rate = 100×SIP×T.
(iii) A sum doubles itself at simple interest at 10% per annum in 10 years.
(iv) Simple interest on Rs 1000 at 5% per annum for 73 days is Rs 10.

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Solution

(i) FalseS.I.=P×R×T100x=x×R×x100R=100×xx×xR=100x%(ii) True(iii) TrueLet the sum be Rs x.S.I.=P×R×T100S.I.=x×10×10100S.I.=Rs xAmount= S.I.+P=x+x=Rs 2x(iv) TrueP=Rs 1000 , R=5%, T=73 days=73365 yrsS.I.=P×R×T100 =1000×5×73100×365 =Rs 10

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