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Mathematics 21 Online
OpenStudy (anonymous):

After you put 8 gallons of gas into an empty tank, the gas gauge reads 2/3 full. What is the capacity of the tank?

OpenStudy (anonymous):

well what is 2/3 in decimal

OpenStudy (anonymous):

0.666666667

OpenStudy (mathstudent55):

The capacity of the tank is unknown, so let's choose a variable to represent it. Let's call the capacity of the tank x.

OpenStudy (mathstudent55):

When the tank is 2/3 full, it has (2/3)*x amount of gas in it.

OpenStudy (mathstudent55):

We know that the tank is 2/3 full when it has 8 gallons of gas, so (2/3)x = 8

OpenStudy (anonymous):

|dw:1387394150589:dw|

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