Question

In what time will a sum of money put at 40/3 % simple intrest triple itself

Answer 1

Answer:

r = 15

Step-by-step explanation:

P becomes 3P in what time at 40/3%

3P = P(1+nr/100)

3 = (1+40/3×1/100×r)

3 = (1+40r/300)

3 = (1+4r/30)

3 = (30+4r/30)

90 = 30+4r

60 = 4r

r = 15