13. Divide a volume of 120 cubic cubits into 10 parts, each with a height of 1 cubit, and with a rectangular base whose sides are in the ratio of $1: \frac{3}{4}$.

## Problems from the Berlin Papyrus.
13. One part $=12$ cubic cubits. Area of the base 12 sq. cubits. If the ratio of the sides $1: \frac{3}{4}$, then the measurements of the rectangular base are 4 and 3.