Gear Rotation - Circuit Counters Problem

Two gears are connected and rotating at time = 0. They are attached to a circuit that has counters when the current is below a threshold of 0.31 Amps. All counters read zero count at t=0. There is a switch connected to the circuit and depends on the rotation of the second gear. After 1 minute, the green counter reads 300, the red counter reads 0, and the blue counter reads 300. What is the number of revolutions per minute of the first gear?