A solution is to be kept between 68°F and 77°F. What is the range in temperature in degree Celsius (C) if the Celsius/Fahrenheit (F) conversion formula is given by

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Solution

A solution is to be kept between 68°F and 77°F .

The Celsius/Fahrenheit conversion formula is

F= 9 5 C+32 (1)

Where, C is Celsius and F is Fahrenheit

Substitute F=68 in equation (1)

68= 9 5 C+32 68−32= 9 5 C 36×5 9 =C C=20

Substitute F=77 in equation (1)

77= 9 5 C+32 77−32= 9 5 C 45×5 9 =C C=25

Therefore, C lies between 20 and 25

Hence, when 68°F<F<77°F then 20°C<C<25°C .

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