**Definitions:**

**Fahrenheit** (abbreviations: **F, or °F, or deg F**): is a temperature scale based on one proposed in 1724 by Amsterdam-based physicist Daniel Gabriel Fahrenheit (1686–1736), with regard to whom the scale is named.

**Rankine** (abbreviations: **R, or °R, or deg R**): is a thermodynamic temperature based on an absolute scale named with regard to the Glasgow University engineer and physicist William John Macquorn Rankine, who proposed it in 1859.

## How to Convert Degree Fahrenheit to Degree Rankine

*Example: How many degree Rankine are equivalent to 79.81 degree Fahrenheit?*

As;

1 degree Fahrenheit = X+459.67 degree Rankine

79.81 degree Fahrenheit = Y degree Rankine

Assuming Y is the answer, and by substitution principle;

Y equals ( 79.81+459.67 ) over 1, where X is substituted by 79.81

(i.e.) Y = ( 79.81+459.67 ) / 1 = 539.48 degree Rankine

Answer is: 539.48 degree Rankine are equivalent to 79.81 degree Fahrenheit.

*Practice Question: Convert the following units into R:*

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 63.7 F

( ii ) 71.25 F

( iii ) 76 F