What is the Electric Field Intensity Midway Between Two Point Charges?

[freeofwork]

Homework Statement

Two point charges of +30μC and -9μC are separated by a distance of 20.0 cm. What is the intensity of electric field E midway between these two charges?

Homework Equations

force electric= kQq/ r^2
Electric field= force elctric /q
= k X Q / r^2

The Attempt at a Solution

I tried finding the electric field intensity for both point chrages at 10 cm and tried adding them together but that didn't work..

 

[MotoPayton]

Is that really how the problem is worded.
I don't believe electric fields to have an intensity...

I would just find the value of the electric fields at the half way distance and add them up. Then the overall field will point toward the negative charge.