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The sixth grade mathematics in the first volume of People's Education Press is the crowning touch in the classroom. Unit 3 Elaborate Test Paper
The school held a rugby match, and the 15 team entered the next stage. In the first stage, every five teams will be divided into one group for a single round robin, and the top two in each group will enter the second stage. If the elimination system is adopted from the second stage, how many games will a * * * play?

Xiao Ming spent a third on pens and 4 yuan on pencils. This is the ratio of the used money to the remaining money of 5: 4. Xiaoming knows how much money I have.

The ratio of two acute angles of a right triangle is 1: 2. What are the three internal angles of this right triangle? (It must be calculated in two ways)

My father is 32 years old, and the age ratio between me and my father is 1: 8. 10 years, what is the age ratio between my father and me? (It must be calculated in two ways)

The radius of the circle is expanded to 5 times, and the circumference is expanded to () times?

A naughty family of four and a smiling family of three went to a restaurant for dinner. A * * * is 105 yuan. The two families decided to share the cost of meals equally. How much do they each pay?

The supermarket bought 360 pieces of glass products from other places, 40 of which were damaged during transportation, and the rest were sold at 1 17% of the purchase price. What percentage can the store make a profit?

A new coating is prepared with a coating with a value of 100 yuan and a coating with a value of 240 yuan. The new coating has less 3 yuan per kilogram than coating A and more 1 yuan than coating B. How much is this new coating per kilogram?

My brother and sister have some pencils. Now my brother has given my sister all his pencils 1/5, so the number of pencils my brother gave my sister is exactly twice that of my sister's original pencils. How much is my sister's pencil now?

Right? No, I'll find it for you.