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A solution is to be kept between 68^@ F ...

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 `F = 9/5 C + 32`?

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The correct Answer is:
The temperature in degree celsius must be in the range between `20^@C and 25^@ C`
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NEW JOYTHI PUBLICATION-LINEAR INEQUALITIES-QUESTIONS FROM COMPETITIVE EXAMS
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  13. If |2x-3| lt |x+5| , then x lies in the interval

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  18. The set of point (x,y) satisfying x+y le 1 , -x-yle 1 lie in the regio...

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  20. The shaded region shown in the figure is given by the inequations

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