47. When summarizing the results of the scrap metal collection competition, it turned out that 6A class collected more scrap metal than 6B and 6V combined, but 6A and 6B together collected as much as 6V and 6G. Moreover, 6B and 6G collected more than 6A and 6V. How did the classes place in the competition?
47. Let 6 A collect a kg, 6 B-b kg, 6 V-v kg, and 6 G-g kg. Then, according to the conditions:
1) $\mathrm{a}>6+\mathrm{B}$
2) $6+r>a+B$
3) $a+\sigma=B+r$.

Subtracting the left side of the third equation from the left side of the second inequality, and the right side from the right side, we get $r-a>a-r$, from which $r>a$. But a $>6$ and a $>$ v, and from $a+\sigma=$ v $+r$ and a $<$ v. Therefore, the places are distributed as follows: $6 \Gamma, 6 \mathrm{~A}, 6 \mathrm{~B}, 6 \mathrm{~V}$.