Answer:
6.13 years
Step-by-step explanation:
The computation of the number of years is shown below:
As we know that
Amount = Principal ×e^{rate,time period}
($900 + $500) = $700 × e^{11.3%, time period}
$1,400 = $700 × e^{11.3%, time period}
ln(2) = 0.113× time period
0.693147181 ÷ 11.3 = time period
= 6.13 years