Answer:
Principal in account A = $200
Principal in account B = $600
Account B earned more interest in the first month.
Step-by-step explanation:
Given two accounts:
<em>Account A:</em>
Time = 9 months =
years
Interest rate = 3.8%
Interest earned = $5.70
<em>Account B:</em>
Time = 27 months =
years
Interest rate = 2.4%
Interest earned = $32.40
To find:
Principal in each account.
Most interest earned in the first month?
Solution:
First of all, let us have a look at the formula for Simple Interest.

Putting the values for Account A and finding the value of Principal:

Now, Putting the values for Account B and finding the value of Principal:

Interest earned in one month i.e.
years:
Account A:


Account B earned more interest in the first month.
Therefore, the answers are:
Principal in account A = $200
Principal in account B = $600
<em>Account B</em> earned more interest in the first month.