Work is force times the distance moved in the direction of the force.
35 * 42 Joules
Is the work done by that force. You do not say if there are also other forces like gravity for example or if the force is in the direction of motion here.
A force of 35.0N is exerted onto a 12.0kg block and the block moves 42.0m. How much work is done?
2 answers
If your textbook gave you a problem written that sloppily, best find another book.