The equation (M )/63 = (p )/21 relates two temperature scales, where M is the number of degrees on one scale and P is the number of degrees on the other scale. Which of the following equations can be used to convert temperatures from the P scale to the M scale?
Choose the most appropriate option:
A) P	B) 2P	C) 4P	D) 3P	E) 7P
M/63 =(P)/21   M = (P)*63/21   =(P)*3 =3P   3P
<result>D</result>
The equation (M )/63 = (p )/21 relates two temperature scales, where M is the number of degrees on one scale and P is the number of degrees on the other scale. Which of the following equations can be used to convert temperatures from the P scale to the M scale?