Question

At what rate percent will a sum , become double of itself in 5.5 years at simple interest?. Plz answer.

Answer 1

${\huge {\mathfrak {Answer :-}}}$

➡️ Let the Principle be 'x' and rate be 'r'.

➡️ (x * r * 5.5) / 100 = 2x - x = x

Or, r * 5.5 = 100

Or, r = 100/5.5 = 18 % (approx)

➡️ Hence, the rate of interest is 18 %.

That's it..