Answer: The new volume will be
of the original volume.
Step-by-step explanation: Given that the width of rectangular prism is reduced to one-tenth of its original size, the height is reduced to one-fourth of its original size and the length is reduced to two-third of its original size.
We are to find the change in the volume of the prism.
We know that
the VOLUME of a rectangular prism with width w units, height h units and length l units is given by

Now, after change in the dimensions as given, the new dimensions of the rectangular prism will be

Therefore, the new VOLUME of the prism will be

Thus, the new volume will be
of the original volume.