The graph between two temperature scales P and Q is shown in the figure. Between upper fixed point and lower fixed point there are 150 equal divisions of scale P and 100 divisions on scale Q. The relationship for conversion between the two scales is given by :-

Question

${{{t_P}} \over {100}} = {{{t_Q} - 180} \over {150}}$

${{{t_P}} \over {180}} - {{{t_Q} - 40} \over {100}}$

${{{t_Q}} \over {150}} = {{{t_P} - 180} \over {100}}$

${{{t_Q}} \over {100}} = {{{t_P} - 30} \over {150}}$

Solution

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