For Cool bank is
simple interst savings
Then
Original Amount P = 800 dollars
rate R= 4%
time T = 3 years
Then
Simple interest = P•R•T/100 = 800•4•3/100= 96
NOW calculate for Hot bank
Money amount P = 800
rate R= 3%
time T= 5 years
A Compound interest A =
A = P • ( 1 + r/100)^ T
A = 800• (1 + 3/100)^ 5
A= 800• (1.03 )^5 = 927.419
Then , amount gained was
927.419 - 800 = 127.419 dollars
Now calculate earnings in ONE YEAR
For Cool bank is= $32
For Hot bank is = 824 - 800= $24
THEN ANSWER IS
Youth group better choice is COOL BANK. $32> $24