Question 1161935
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The interest of $1330 is 4% of the x amount loaned to Alberto plus 5% of the 3x amount deposited in the bank:<br>
{{{.04(x)+.05(3x) = 1330}}}
{{{.04x+.15x = 1330}}}
{{{.19x = 1330}}}
{{{x = 1330/.19 = 7000}}}<br>
Loan to Alberto: x = $7000
Deposited in the bank: 3x = $21,000<br>