Question 94999
1/(R2+R3)=1/RT-1/R1 ... 1/(R2+R3)=1/2-1/5 ... LCD is 10 ... 1/(R2+R3)=5/10-2/10=3/10


R2+3=10/3 ... 3R2+9=10 ... 3R2=1 ... R2=1/3