1.

Rajesh deposits a certain amount in a bank which becomes three times of itself in 16 years. Find the time required by the same amount to become four times of itself at the same tate of interest,if the interest is not compounded

Answer»

sum of money (principal) be RS. 100∴ A.T.Q. -Amount=3×principal∴ Amount = 3×100=Rs. 300∵Interest(I) = (A)Amount-Principal(P)∴ I = (300-100)Rs.=Rs.200and ∵ I = (P×R×T)/100∴ 200 = (100×R×16)/100⇒ 200 = (1600×R) /100⇒ R = (200×100)/1600⇒ R = 12.5%In case 2 :Amount = 4×principal∴ A =( 4×100)Rs.= Rs. 400∵ I = A-P∴ I = (400-100)Rs.=Rs. 300Time =?Rate = 12.5 % p.a(PER annum OR per year)∵ Time = (Interset × 100)/P ×R∴ Time = (300 × 100)/(100 ×12.5)⇒ Time = 24 YearsHope it helps.Mark me as a BRAINLIEST.



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