The voltage gain of a precission amplifier is determine by the ratio of 2 resistors.the gain must be accurate to within +/- 2.5% of the design value over a temperature range 0-40 degrees and a period of 5 years. metal film resistors with stability of +/- 1% over 5 years and a temperature coefficient of +/- 50 ppm/degree are chosen. What is the reqiured initial manufacturing tolerance at 20 degrees celsius of the resistor values.