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At what rate of simple interest a certain will be doubled in 10 years ?10%12%13%15%At what rate a sum doubles itself in 8 year 4 months.At what rate percent per annum simple interest will a of money double itself in 6 years?14.615.613.616.6[Solved] A certain sum doubles itself in 8 years on simple interest pOpen in App
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Let Principal (P)=Rs.a,Time (T)=T years, Rate (R)=8% and Amount (A)=Rs.2a Using formula, A=P+SI,we get, SI=Rs.a Therefore, SI=P×R×T100 ⇒a×100=a×T×8 ⇒T=1008=12.5 years
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