Question

6. At what rate per cent per annum would 5,000 become 8,000 in 3 – years?
1
Who earned
} .
2
are will a sum become triple of itself at the rate of 12%?​

Answer 1

Explanation:

1.

P = 5000

Si = 3000

R = ?

N = 3

SI = P×N×R/100

3000 = 5000× 3× R /100

R = 3000× 100/ 15000

R = 20%

2.

Let assume

P = 100

A = 300

I = 12%

N = ?

A = P (1+i) n

300= 100 (1+0.12) n

3 =( 1.12)

( 1.12)10.6= (1.12)10.6

No of years are 10 years 6 month