Answer:
Time will be 8.20 year
Explanation:
We have given that the machinery cost A = $11900
And principal amount P = $67000
Rate of interest r = 7 % = 0.07
We have to find the time t
We know that formula
[tex]A=Pe^{rt}[/tex]
[tex]119000=67000e^{0.07t}[/tex]
[tex]1.776=e^{0.07t}[/tex]
[tex]0.07t=ln1.776[/tex]
[tex]0.07t=0.5743[/tex]
t = 8.20 year