Answer: Write a system of linear equations in three or four variables tosolve Exercises
Chapter 6, Problem 49(choose chapter or problem)
Write a system of linear equations in three or four variables tosolve Exercises 4750. Then use matrices to solve the system.Imagine the entire global population as a village of precisely200 people. The bar graph shows some numeric observationsbased on this scenario.Combined, there are 183 Asians, Africans, Europeans, andAmericans in the village. The number of Asians exceeds thenumber of Africans and Europeans by 70. The differencebetween the number of Europeans and Americans is 15. If thenumber of Africans is doubled, their population exceedsthenumber of Europeans and Americans by 23. Determinethenumber of Asians, Africans, Europeans, and Americansin the global village.
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