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Apabila angka y ditunjukkan oleh termometer Fahrenheit lima kali angka yang ditunjukkan oleh termometer Celcius maka suhu benda tersebut adalah…

Apabila angka y ditunjukkan oleh termometer Fahrenheit lima kali angka yang ditunjukkan oleh termometer Celcius maka suhu benda tersebut adalah… 

Pembahasan

Diketahui :

begin mathsize 14px style T subscript F equals y T subscript F equals 5 T subscript C T subscript C equals 1 fifth T subscript F equals 0 comma 2 T subscript F end style

Ditanya :

begin mathsize 14px style T subscript F equals y equals.... ? end style

Jawab :

Gunakan perbandingan thermometer Fahrenheit dan thermometer Celcius :

table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator T subscript F minus 32 over denominator 212 minus 32 end fraction end cell equals cell fraction numerator T subscript C minus 0 over denominator 100 minus 0 end fraction end cell row cell fraction numerator T subscript F minus 32 over denominator 180 end fraction end cell equals cell fraction numerator 0 comma 2 T subscript F minus 0 over denominator 100 minus 0 end fraction end cell row cell fraction numerator T subscript F minus 32 over denominator 180 end fraction end cell equals cell fraction numerator 0 comma 2 T subscript F over denominator 100 end fraction end cell row cell T subscript F minus 32 end cell equals cell fraction numerator 180 cross times 0 comma 2 T subscript F over denominator 100 end fraction end cell row cell T subscript F minus 32 end cell equals cell fraction numerator 36 T subscript F over denominator 100 end fraction end cell row cell T subscript F minus 32 end cell equals cell 0 comma 36 T subscript F end cell row cell T subscript F minus 0 comma 36 T subscript F end cell equals 32 row cell 0 comma 64 T subscript F end cell equals 32 row cell T subscript F end cell equals cell fraction numerator 32 over denominator 0 comma 64 end fraction end cell row cell T subscript F end cell equals cell 3200 over 64 end cell row cell T subscript F end cell equals cell 50 straight F presuperscript straight o end cell end table

Dengan demikian suhu pada skala termometer Fahrenheitnya adalah 50oF.

 

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