Concept explainers
Becky moves into an apartment with two friends on August 1. Becky’s friends have been in the apartment since July 1. The electric bill comes every two months, and the next one will be for the electricity used in July and August. The bill is not broken down by month. What fraction of the July/August electric bill should Becky pay, and what fraction should her two friends pay, if they want to divide the bill fairly?
a. Solve Becky’s electric bill problem if the apartment has a large communal area that is frequently used by all the friends, the friends typically eat meals, together, and not much electricity is used in the separate sleeping areas. Explain your reasoning.
b. Solve Becky’s electric bill problem if the friends spend most of their time in their separate rooms, don’t eat meals together, and don’t spend much time together in their communal area. Explain your reasoning.
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Mathematics for Elementary Teachers with Activities (5th Edition)
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