Answer:
Abam:Emeka:Madu = 6:4:5
Explanation:
Let's denote the amount contributed by Abam as x
Now, we are told that for every N3 Abam puts, Emeka puts in N2
It means Abam to Emeka is 3:2
Also,for every N4 put in by Emeka, madu, puts in N5. It means Emeka to madu is 4:5
Now, in Emeka to madu, Emeka contributes N4 for every N5 from madu. Let's rewrite Abam to Emeka to make Abam N4 there.
Thus, since Abam to Emeka is 3:2, we can write it as 6:4 and it will still be the same.
Therefore, for every N6 Abam contributes, Emeka contributes N4.
Thus, since Emeka to madu is 4:5, then we can say the ratio of 3 of them is;
6:4:5