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There are 500 men, 1,000 women and 4,000 children at the swimming pool.

The triangle's sides are 43 cm, 65 cm and 54 cm long.

Dimensions of the cuboid are 9 cm, 12 cm and 15 cm.

The wanted number is 1,793.

The cylinder contains 4.806 kg of copper and 1.491 kg of zinc.

We have to use 225 kg of the alloy B, and by that we will obtain 255 kg of the alloy A.

The temperature of water in the containers is 26°C and 76°C.

We have to mix 23.077 grams of an 80% solution and 76.923 grams of a 54% solution.

We have to mix 10 liters of a 30% solution and 15 liters of a 50% solution.

1,323 grams of the sulfuric acid contains 27 grams of hydrogen, 432 grams of sulfur and 864 grams of oxygen.

100 kg of FeS contains 63.64 kg of iron and 36.36 kg of sulfur.

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