Finding Q1 and Q2 in coulombs law

[D.J Falcon]

0.36=(K)x(Q1xQ2/0.25^2)

Find Q1 and Q2 if Q1=3(Q2)

Using the solve function in my calculator I get Q1=2.74x10^-6 and Q2=9.13x10^-7

I would just like to know whether my answer is correct and how to do it in a calculator without using the solve function.

Thanks in advance.

Edit: Yep sorry, missed out r :P

 

[Xisune]

You need the value of r to solve the equation.

 

[tiny-tim]

Hi D.J Falcon!

If Q₁=3(Q₂), then (K)x(Q₁xQ₂/0.25²) = (K)x(3Q₂xQ₂/0.25²)