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Linear Equations in Two Variables — Maths STD 9 — Question

Gujarat BoardEnglish MediumSTD 9MathsLinear Equations in Two Variables2 Marks
Question
The linear equation that converts Fahrenheit (F) to Celsius (C) is given by the relation,
$\text{c}=\frac{5\text{F}-160}{9}$
If the temperature is 86°F, what is the temperature in Celsius?
✓

Answer

$\text{c}=\frac{5\text{F}-160}{9}$
putting F = 86°, we get $\text{C}=\frac{5(86)-160}{9}=\frac{430-160}{9}=\frac{270}{9}=30^\circ$
Hence, the temperature in Celsius is 30°C.

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