B1. In the country of Mokri breg, an average of $250 \frac{\ell}{\mathrm{m}^{2}}$ of precipitation falls per month. From the graph, it is clear how much precipitation fell in this place each hour on a certain day from 9 to 15 hours.

A. Between which hours did the most precipitation fall?

B. How many liters of rain per square meter fell on this day from 9 to 15 hours?

C. What percentage of the monthly average fell during this time?

D. Aunt Amalija's house has a roof with an area of $150 \mathrm{~m}^{2}$.

![](https://cdn.mathpix.com/cropped/2024_06_07_debf03cdc366cb9b1122g-07.jpg?height=600&width=834&top_left_y=188&top_left_x=1071)

How many cubic meters of rain fell on the roof of her house from 9 to 15 hours on this day?
B1. The largest amount of rainfall occurred between 12 and 13 o'clock.

In all six hours, $10 \ell+17 \ell+15 \ell+29 \ell+21 \ell+8 \ell=100 \ell$ of rain fell per $\mathrm{m}^{2}$. In the six hours shown, $100 \frac{\ell}{\mathrm{m}^{2}}$ fell, which is $40 \%$ of the monthly average. On a roof with an area of $150 \mathrm{~m}^{2}$, $150 \cdot 100 \ell=15000 \ell=15 \mathrm{~m}^{3}$ of rain fell.

A. The most rain fell between 12 and 13 o'clock. ............................................ 1 t

![](https://cdn.mathpix.com/cropped/2024_06_07_debf03cdc366cb9b1122g-13.jpg?height=72&width=1559&top_left_y=615&top_left_x=297)
C. $100 \frac{\ell}{\mathrm{m}^{2}}$ of $250 \frac{\ell}{\mathrm{m}^{2}}$ is $40 \%$.......................................................................................................................

D. $15000 \ell$ of rain fell on the roof, ............................................................... 1 t

![](https://cdn.mathpix.com/cropped/2024_06_07_debf03cdc366cb9b1122g-13.jpg?height=57&width=1490&top_left_y=814&top_left_x=366)