Answer: $800
Explanation:
N invests $1,000, X invests $2,000, Y invests $3,000 and Z invests $4,000. This in the ratio of 1:2:3:4.
If the profits for the first month were $2,000, the amount received by Z will be:
= 4/(1+2+3+4) × $2000
= 4/10 × $2000
= 4 × $200
= $800