SOLUTION: Javier invests money in two simple interest accounts. He invests twice as much in an account paying 13% as he does in an account paying 6%. If he earns $104.00 in interest in one
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Question 1106855: Javier invests money in two simple interest accounts. He invests twice as much in an account paying 13% as he does in an account paying 6%. If he earns $104.00 in interest in one year from both accounts combined, how much did he invest altogether?
Total Principal in Both Accounts = $
Found 2 solutions by JThomson, addingup:
Answer by JThomson(12) (Show Source): You can put this solution on YOUR website!
Let the amount invested (Principal) for bank B be y;
Interest on Bank B with interest rate at 6% is;
(y×6×1)/100
Similarly amount invested for bank A is 2y;
Interest on bank A is given by;
(2y×13×1)/100
Total Interest is 104.00
(y×6×1)/100 + (2y×13×1)/100 = 104
6y+26y = 10400
32y = 10400
y = $325.00 ; This is the interest on "Bank B"
2y = 2×325 = $650.00; This is the interest on "Bank A".
Total amount invested is 325+650 = $975
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
0.06x + 0.13(2x) = 104
0.06x + 0.26x = 104
0.32x = 104
x = 325 this is the amount at 6%
2x = 2(325) = 650 this is the amount at 13%
------------------------------------
Check:
0.06*325 = 19.5
0.13*650 = 84.5
. . . . .-------
Total . . 104
The answer is correct
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