Find the charge of the sphere (q2)

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Homework Statement
Two small spheres (q1& q2) have different charges that add up to 5.0x10^-5 C. If they repel each other with a force of Fe = 1.0 N at a distance of 2.0 m apart, what is the charge on q2?
Relevant Equations
Electric force formula

Fe= (k*q1*q2)/r^2

Electric Field Formula

E=(k*q1)/r^2

where k is a constant 9x10^9 N*m^2/kg^2
I drew a diagram using all of the information

hw1.jpg


however, I am stuck and not to sure how to get one of the charges
 
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