Question

A sum of money double itself in 16 yr at
simple interest. Annual rate will be
FULL EXPLANATION FOR BRAINLIST MARK :-EASY METHOD
(a) 10%
(b) 6-%
(C) 8%
(d) 16%​

Answer 1

Answer:

Let the sum be S, then interest is also S

SI =S×(r/100)×16=S

(r/100)×16=1

r=100/16=6 1/4%