The boiling & freezing points on a newly defined temperature scale in degree ‘D’ are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to _____________ °D ?
Correct answer: D
Explanation
Use the formula: (T_new - T_old) / (T1 - T2) = (t - t_o) / (t1 - t_o). Plugging in values gives 280°D.