Use correct number of significant digits. The tolerance is +-1 in the 3rd significant digit

Three particles are fixed on an x axis. Particle 1 of charge q, is at x = -a and particle 2 of charge 92 is at x = +a. If their net electrostatic force on particle 3 of charge Q is to be zero, what must be the ratio q1/92 when particle 3 is at (a) x = +0.476a and (b) x = +1.860? (a) Number i 7.95 Units A (b) Number -11.05 ! Units A