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If -40°F is equal to -40°C and 0°C is equal to 32°F then find the value of 40°C.

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in Mathematics - Class 11 by (789k points)
If -40°F is equal to -40°C and 0°C is equal to 32°F then find the value of 40°C.

(a) 104°F

(b) 112°F

(c) 86°F

(d) 92°F

This question was posed to me in a job interview.

Question is from General Equation of a Line topic in chapter Straight Lines of Mathematics – Class 11

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Best answer
The correct answer is (a) 104°F

The explanation is: Let general equation be F=m*C +k

-40 = -40m + k

and 32 = 0 + k

=>-40 = -40m + 32 => m=72/40 = 18/10

F=18/10 * 40 + 32 = 72+32 = 104.

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