Kaztta T.v.

One trader sells plums for 150 rubles per kilogram, while the second sells them for 100 rubles. However, the stone makes up one-third of the weight of each plum from the first trader, and half the weight from the second trader. Whose plums are more cost-effective to buy?
Let's compare the price of plum flesh. The first trader sells $1-1 / 3=2 / 3$ kilograms for 150 rubles - that is, the flesh costs $150: 2 / 3=225$ rubles per kg. The second trader's flesh price is 100 rubles for half a kilo - that is, 200 rubles per kg. Therefore, a kilogram of flesh is cheaper from the second trader, so it is more profitable to buy plums from him.

## Answer

It is more profitable to buy plums from the second trader.