the difference between ci and si on a certain sum for 2years at 5/p.a is rs40.find the sum.
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Answer:
Let Principle be P.
S.I. = P×R×T = P×5×2 = 10 P = P
100 100 100 10
C.I. = P { 1 + 5 } ^2 = 21×21 P
{ 100 }. 20×20
= 441 P
400
ATQ /
C.I. - S.I. = $40
441 P - 1 P = 441 P - 400 P = 40
400 10 400
= 41 P = $40
400
= P = 40 × 400
41
= P = 390.24
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