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Cost of Natural Gas In April, 2012, Nicor Gas had the following rate schedule for natural gas usage in single-family

Cost of Natural Gas In April, 2012, Nicor Gas had the following rate schedule for natural gas usage in single-family

 Cost of Natural Gas In April, 2012, Nicor Gas had the following rate schedule for natural gas usage in single-family residences:

Monthly customer charge: $8.40

Distribution charge:

1st 20 therms: $0.1473/therm

Next 30 therms: $0.0578/therm

Over 50 therms: $0.0519/therm

Gas supply charge: $0.43/therm

(a) What is the charge for using 40 therms in a month?

(b) What is the charge for using 150 therms in a month?

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Category: Sample Questions