You know that it's a bot when it says "explanation in file".
They forgot to put a question, there's nothing to answer...
Answer:
(24,13)
Step-by-step explanation:
24 is Sarah's age.
13 is Mike's age.
System:

I hope this helped!
the answer would be 10/21
Principal , P =$800
Rate , r = 6% = 0.06
Time , t = 3 years
Simple Interest = P*r*t = 800*0.06*3 = $144
Total Interest plus Principal = $800 + $144 = $944