The volume of a balloon filled with helium at 27 ℃ is 300 cm3. What will be the volume of the ball when the temperature rises to 37 ℃?

Decision:
need to make a proportion
t1 = 27 degrees
V1 = 300 cm3,
t2 = 37 degrees
you need to find V2, i.e. t1 / V1 = t2 / V2, hence
V2 = V1 * t2 / t1
V2 = 300 cm3 * 37 degrees / 27 degrees = 411 cm3
Answer: 411 cm3

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