A10. How tall is the pole if one third of the pole is in the ground, half is in water, and above the water, it protrudes 1.5 meters?
(A) $9.5 \mathrm{~m}$
(B) $10 \mathrm{~m}$
(C) $7.5 \mathrm{~m}$
(D) $9 \mathrm{~m}$
(E) $8 \mathrm{~m}$

# The First Regional Mathematics Knowledge Competition for Vocational School Students

May 12, 2001

## II. Part: LONGER PROBLEMS

Instruction: Solve problems B1 to B4 of the second part on the provided paper, where you write down the complete calculations. Read each problem carefully and answer the questions asked. The solution to each of these problems will be rated from 0 to 5 points.

Note that you have 90 minutes to solve the problems of the first and second parts.
A10. Let $h$ be the height of the pole. Then $h=\frac{h}{3}+\frac{h}{2}+1.5$, from which it follows that $\frac{h}{6}=1.5$ and $h=9 \mathrm{~m}$.

## II. PART