Answer:
4 years
Step-by-step explanation:
Interest (I) = $ 100
r = 3.8 %
P = $ 700
t = ?
[tex]t = \frac{I *100}{P*r}\\\\t = \frac{100 * 100}{700 * 3.8}\\\\t = \frac{100 * 100}{70 * 38}\\\\t = 3.75[/tex]
t = 4 years
