Calculate the required values for the capacitor C1, and resistor RA, RB for an RC circuit to produce a signal with the frequency 50Hz (+/- 2 Hz) and a positive duty cycle of 85% (+/- 2%). You should make sure you can build this using the capacitors and resistors (to the nearest 10R) in your kit. You will need to use the formulas from the NE555/556 datasheet to do this.

Show your working steps. You can attach a photo into the submission if need be.