Question

a sum triplets itself in 10 years when the rate of interest is​

Answer 1

Answer:

20%

Step-by-step explanation:

let principle pe x

so, amount = 3x

Amount= SI + Principle

SI= Amount - principle = 3x - x = 2x

SI=

$\frac{p \times r \times t}{100}$

$2x = \frac{x \times r \times 10}{100} \\ \frac{x \times r \times 1}{10} \\ r = \frac{2x}{x} \times 10 \\ r = 2 \times 10 = 20$