 
 <translate> Based on the given information, the following equation could be dervied: 1% * x + 5% * y + 3% * z = 7% * (x+y+z)
Then use algebra to figure out 6%*x = -2%*y - 4%*z. Thus, 3x = -1y - 2z. So, the answer is (A). <ibo> Dabere na ozi e nyere, ndị na-esonụ akụkụ nwere ike derived: 1% * x + 5% * y + 3% * z = 7% * (x + y + z) Mgbe ahụ jiri algebra chọpụta 6%*x = -2%*y - 4%*z. Ya mere, 3x = -1y - 2z. Azịza ya bụ (A). 