In the store, potatoes, beets and carrots are in a ratio of 12: 6: 5.

In the store, potatoes, beets and carrots are in a ratio of 12: 6: 5. Find the mass of each type of vegetables, if there are 345 kg of all these vegetables in the store.

Let the mass of one piece of vegetables be x kg.

Potatoes make up 12 parts of vegetables, which means its mass is:

12 * x = 12x kg.

Beets are 6 parts of vegetables, which means their mass is:

6 * x = 6x kg.

Carrots are 5 parts of vegetables, which means their mass is:

5 * x = 5x kg.

The mass of all vegetables in the store is 345 kg, we will compose and solve the equation:

12x + 6x + 5x = 345,

23x = 345,

x = 15 kg,

12x = 12 * 15 = 180 kg,

6x = 6 * 15 = 90 kg,

5x = 5 * 15 = 75 kg.

Answer: in the store there are 180 kg of potatoes, 90 kg of beets and 75 kg of carrots.