Exchange

Doraemon and his friends (Dekisugi, Nobita, Shizuka, Gian, Suneo) go to a park to play seesaw. In the following picture, there are six friends with their weights. Gian wants to play seesaw but he is a bit heavy. Who should be two friends to sit on the other side of the seesaw to make it balance?

• Dekisugi and Suneo

• Dekisugi and Nobita

• Nobita and Shizuka

• Shizuka and Suneo

• Cannot be determined

Each container holds water and some objects with the volume as shown in the figure. Given that the amount of water in each container is the same. How many milliliters of water are there in the container?

• 10ml

• 20ml

• 30ml

• 40ml

Winnie the Pooh bought four toys at the supermarket. The prices of the toys are given as shown in the figure. Arrange the prices of the toys in ascending order

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3 pencils and 2 erasers cost $8. 3 pencils and 5 erasers cost $11. How much does one pencil cost in dollars?

The total mass of a bag and two suitcases is 7 kg. The total mass of three bags and nine suitcases is 30 kg. What is the mass of one suitcase?

• 3kg

• 4kg

• 1kg

• 2kg

• 6kg

In a game it is possible to make the exchanges as shown in the picture. Nina has 6 pears. How many strawberries will Nina have, when she trades all his pears for just strawberries?

• 18

• 12

• 36

• 2