The chart below shows the amount of coal mined in four different states of USA in the year 2005.

State Amount of coal mined (in billion tons)

West Virginia 37

Wyoming 68

Montana 120

Illinois 78

In which state was the greatest amount of coal mined in 2005?

Illinois

Montana

Wyoming

West Virginia

The correct answer is Montana.

In fact, we see from the table that Montana is the state with the largest amount of coal mined in 2005: 120 billion tons, while all the other states have a smaller amount of coal mined (37, 68 and 78, for West Virginia, Wyoming and Illinois, respectively).