[" 29.The graph between two temperature scales "A" and "B],[" is shown in figure between upper fixed point and "],[" lower fixed point there are "150" equal division and "],[" scale "A" and "100" on scale."B" .The relationship for "],[" scale "A" and "100" on scale."B" .The relationship for "],[" conversion between the two scales is given by "],[qquad [" (b) "(t_(A)-30)/(150)=(t_(B))/(100)],[" (c) "(t_(B)-180)/(150)=(t_(A))/(100)," (d) "(t_(B)-40)/(100)=(t_(A))/(180)]]