RTD temperature measurement system resistance question
You know the resistance changes by 38.5\$\Omega\$ (assuming a DIN-standard Pt100 sensor) for your desired range, so you should be able to calculate the current required, the resistance on your bridge half to balance at 100\$\Omega\$/0°C and calculate the effect of leadwire resistance changes. 

Nobody would make an RTD front end like this in 2019. The required sensor current too high (leading to excessive self-heating), correction for leadwire resistances is imperfect etc. Presumably this is a homework problem, so if you want additional help, please show your work.