Hey there!
There are 12 inches in 1 foot . . .
1 foot = 12 inches
Now, divide the numbers 240 and 12 to find out how many feet are in 240 inches . . .
240 ÷ 12 = 20
The correct answer to your question is 20.
240 inches = 20 feet.
Hope this helps you.
Have a great day! :)