Question

iii) In what time, a sum of money doubles
itself at 10% simple interest?
a)
10 yrs
(b) 15 yrs
c)
13 yrs
(d) 20 yrs.​

Answer 1

Answer:

20 years

Step-by-step explanation:

Simple Interest = PTR/100

(let take principle = 100

and Simple Interest = 200(i.e.double of principle)

Time = X and Rate= 10%)

solution

SI = PTR/100

200= 100 × X× 10/ 100

X = 20

Time = 20 yrs