If temperature t is directly proportional to heat h, and when t = 20^oC, h = 50 J, find t when h = 60J

24^oC

20^oC

34^oC

30^oC

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Correct answer is A

t ∝ h, t = 20, h

t = ? h = 60

t = kh where k is constant

20 = 50k

k = $\frac{20}{50}$

k = $\frac{2}{5}$

when h = 60, t = ?

t = $\frac{2}{5}$ × 60

t = 24^oC

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If temperature t is directly proportional to heat h, and when t = 20oC, h = 50 J, find t when h = 60J

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If temperature t is directly proportional to heat h, and when t = 20^oC, h = 50 J, find t when h = 60J