Question 196220
I;ll set it up, you can take it from there. 
Assume the extra amount at 5.5% is X

Then
{{{3000*0.04 + X * 0.055 = (3000+x) * 0.045}}}
{{{120 + 0.055X = 135 + 0.045X}}} now collect terms and solve for X

Any issue, let me know