Question 119945
(3400+x).055=3400*.05+.065x
187+.055x=170+.065x
.055x-.065x=170-187
-.01x=-17
x=-17/-.01
x=$1,700 amount that needs to be invested @ 6.5%
proof
(3400+1700).055=3400*.05+.065*1700
5100*.055=170+110.5
280.5=280.5