What is the magnitude of the current in this ionic solution?

[BuBbLeS01]

Current...please help!

Homework Statement

In an ionic solution, 3.93×10^15 positive ions with charge +2e pass to the right each second while 9.01×101^5 negative ions with charge -e pass to the left. What is the magnitude of current in the solution?

Homework Equations

I = Ch in Q / Ch in T

The Attempt at a Solution

So I did...
R = 1.6x10^-19 * 3.93x10^15 / 1
R = -1.6x10^-19 * 9.01x10^15 / 1
and then I added them...what am I doing wrong?

 

[malawi_glenn]

3.93×10^15 positive ions with charge +2e pass

You forgot to multiply by two here.