1.

1). 102). 203). 254). 30

Answer»

<P>PRINCIPAL : INTEREST = 5 : 8

So, S.I. = 8a and P = 5a

S.I. = (P × R × T)/100

⇒ 8a = (5a × R × 8)/100

∴ R = (100 × 8a)/(5a × 8) = 20%



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