1.

At what rate percent per annum will a sun treble itself in 16 year ​

Answer»

ANSWER:

Let, the SUM = Rs X and RATE = R%. TIME (t) = 16 YEARS.

Since, X tripled in 16 years, INTEREST (1) = Rs (3X - X) = Rs 2X.

Now,

1 = (Sxtxr) / 100

2X = (X x 16 x r) / 100

r= 50/4

Rate = 12.5%

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