# Mathematics Olympiad

**Mathematics** is a science that is unique. Many people who do not like science, but partly also explore the science of this. Students who are practicing about Mathematics Olympiad is one part that wants to explore the science of Mathematics. If every day was trained, it is not likely they will someday be a scientist who has a strong knowledge base and are useful for human life.

On this occasion, we will prepare questions for the Olympic School level Dasar. We hope that the children at an early age education has a strong science base, so that they become the children of the nation are useful for the world.

1. The figure is made up of a right-angled triangle and a trapezium. The sides of the right-angled triangle are in the ratio 3 : 4 : 5. What is the area of the figure if the length of the triangle’s shortest side is 18 cm?

2. The ratio of the number of apples to the number of pears in a supermarket was 5 : 2. After 630 apples were sold, the ratio the number of apples to the number of pears become 2 : 1. How many pears were there in the supermarket?

3. The ratio of the number of male workers to the number of female workers in a factory was 4 : 7. After some male workers joined the factory, there is a 25% increase in the number of male workers. Given that there are 660 workers in the factory now, what is the number of workers in the factory?

4. In the rectangle *ABCD*, *AE : ED *= 2 : 3 and *AF : FB *= 2 : 5. The area of triangle *CDE* is 63 cm^{2}. Find the area of the shaded part.

We hope the above questions is distributed to students in elementary school. And teachers may also discuss such questions. Read also **Ways to Make Your Scholarship Essay Stand Out**.

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