A solution is to be kept between `68oF`and `77oF`. What is the range in temperature in degree Celsius (C) if the Celsius / Fahrenheit (F) conversion formula is given by`F=9/5C+32 ?`

Explanation

solution : `68^@ F - 77^@F`

`68^@F < T < 77^@F`

`68^@F < 9/5C+32 < 77^@F `

`68-32 < 9/5C <77-32`

`36<9/5C <45`

`= 20 < C < 25`

Solution is in between `20^@C & 25^@ C`

answer