Question 659637
x + y = $1400
.06x + .02y = 72

Elimination
Multiply the first equation by .06 and subtract the second equation
.06(x + y = 1400) or
 .06x + .06y =  84
-.06x + .02y =  72
.06x - .06x + .06y - .02y = 84 - 72
Combine like terms
.04y = 12
.04y/.04 = 12/.04
y = 300

Plug y into the first equation
x + 300 = 1400
x + 300 - 300 = 1400 - 300
x = 1100

$300 at 2% and $1100 at 6%