set this up with AS,AF,E,Am variables
As+0Af-E-Am=69
0As+0Af+E-Am=7
0As+2Af-E-Am=23
As+Af+E+Am=178
1,0,-1,-1,69
0,0,1,-1,7
0,2,-1,-1,23
1,1,1,1,178
row1+4>4
1,0,-1,-1,69
0,0,1,-1,7
0,2,-1,-1,23
2,0,0,0,247
something is wrong, we have a non-integer for number of Africans. Recheck the problem.
Combined, there are 178.
Asians, Africans, Europeans, and Americans in a village.
The number of Asians exceeds the number of Africans and Europeans by 69.
The difference between the number of Europeans and Americans is 7.
If the number of Africans is doubled,
their population exceeds the number of Europeans and Americans by 23.
Determine the number of Asians, Africans, Europeans, and Americans in this village
Using a Matrix or matrices.
How many Asians:
Africans:
Europeans:
Americans:
In the village?
1 answer