Please help an old man who has been out of school for many years :-)
Solve for Tg ...
R=100-(100/(1+S)
sub:
S=G/L
sub:
G=(Yg+Tg)/2
L=(Ys+Ts)/2
Many Thanks in Advance
Start by solving for S:
Subtracting 100 from both sides:
Multiplying through by :
Multiplying through by the denominator:
Dividing both sides by :
Subtracting from both sides:
Writing everything over a common denominator:
Simplifying:
, so:
Which means that:
, so:
See if you can take it from here, using a similar approach. Don't substitute for L until you've solved for