Question 722697
P(1+R)^T
X(1+.07)^1+(6000-X)(1+.06)^1=6391
1.07X+(6000-X)*1.06=6391
1.07X+6360-1.06X=6391
.01X=6391-6360
.01X=31
X=31/.01
X=$3,100 INVESTED @ 7%
6000-3100=$2,900 AMOUNT INVESTED @ 6%.
PROOF:
3100*1.07+2900*1.06=6391
3317+3074=6391
6391=6391