Sarah's gas meter readings were 5,003 CCF last month and 5,014 CCF this month. Her natural gas supplier charges $1.72 per CCF. What is her total natural gas bill for the month?
The CFF of natural gas used = The current reading subtract Previous reading
Therefore
The CCF of natural gas they used "= 5014-5003=11CCF"
"1CCF\\to \\$1.72"
"\\therefore 11CCF\\to 11\\times 1.72=\\$18.92"
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