plumber needs four sections of pipe 2

7
8
feet long. Can this be cut from a 12 foot section? If so, how
much pipe will be left over? If not, why not?

1 answer

The way you typed your numbers makes the values unclear.

Do you mean "four sections of pipe" 2 7/8 feet long? If so, then here is help.

Since 3 > 2 7/8, and 4 * 3 = 12, it can be done.

Remainder = 12 - (4 * 2 7/8) = ?