The graph between two temperature scales A and B is shown in Fig. 11.1. Between upper fixed point and lower fixed point there are 150 equal division on scale A and 100 on scale B. The relationship for conversion between the two scales is given by
1
\(\frac{{{t_A} - 180}}{{100}} = \frac{{{t_B}}}{{150}}\)
2
\(\frac{{{t_A} - 30}}{{150}} = \frac{{{t_B}}}{{100}}\)
3
\(\frac{{{t_B} - 180}}{{150}} = \frac{{{t_A}}}{{100}}\)
4
\(\frac{{{t_B} - 40}}{{100}} = \frac{{{t_A}}}{{180}}\)