Answer:
2.5 million
Step-by-step explanation:
Given that :
Population in 2003 = 10.5 million
Population in 2003 = 3 million + (3 * population in 1950)
Hence from both expressions :
Let population in 1950 = p
3,000,000 + (3 * p) = 10,500,000
3,000,000 + 3p = 10,500,000
3p = 10,500,000 - 3,000,000
3p = 7,500,000
p = 7,500,000 / 3
p = 2,500,000
Hence, population in 1950 is 2.5 million