Because the quantity of commodity A: the quantity of commodity B = 5: 6 = 10: 12,

Quantity of commodity B: quantity of commodity C = 4:11=12: 33,

So the quantity of commodity A: the quantity of commodity B: the quantity of commodity C = 10: 12: 33,

If we buy X products for C, we will buy 1033x products for A,

x× 10- 1033 x×30 = 2 10，

10x- 100 1 1x = 2 10，

10 1 1x = 2 10，

x = 23 1；

Quantity of a commodity: 23 1× 1033=70 (pieces);

Quantity of commodity B: 70×6÷5=84 (pieces);

The total amount of funds raised is: 70× 30+84×15+23/kloc-0 /×10.

=2 100+ 1260+23 10,

=5670 (yuan);

A: The amount raised this time is 5670 yuan.

So the answer is: 5670.