The EdScale defines the perfect temperature of an iced tea t

The Ed-Scale defines the perfect temperature of an iced tea to be 14 degree E and the boiling point of antifreeze to be 100 degree E. If on the Fahrenheit scale these occur at 38 degree F and 375 degree F, respectively, then write an equation that converts from Fahrenheit to Eds. Use this equation to find the freezing point of water in Eds. 10.12 degree E 12.47 degree E 12.32 degree E 14.92 degree E 11.56 degree E 9.655 degree E

Solution

(sclae temprature - ice temprature) /(antifreeze temprature - ice temprature ) = constant

(E -14) /(100-14) = (F-38)/(375-38)

          (E-14)/86 = (F-38) /337

              E - 14 = (86/337)(F-38)

                   E =[(86/337)(F-38)]+14

Freezing point temprature of water in Fahrenheit sclae F = 32 o F

Freezing point temprature of water in Ed-scale E = ?

    E = [(86/337) (32-38)]+14

       = -1.5311+14

       = 12.47 ^o E