## Task 4 - 040614

Decompose the number 390 into three summands, where the second is three times as large as the first and the third is $2 \frac{1}{2}$ times as large as the first!
The first summand is twice as large as its half, the second is 6 times and the third is 5 times as large as this half. In total, the sum of 390 consists of 13 summands, each of which is half as large as the sought first summand. In this way, the three summands 60, 180, and 150 are found.