Final answer:
India's population is 25 times greater than the population of Spain. This is calculated by dividing the scientific notations of both populations: (1.25 x 10^9) / (5 x 10^7) = 25.
Step-by-step explanation:
To determine how many times greater the population of India is than the population of Spain, we divide India's population by Spain's population using their given scientific notations.
India's population is 1.25 x 10^9, and Spain's population is 5 x 10^7. To find out how many times larger India's population is, we perform the division:
(1.25 x 10^9) / (5 x 10^7) = (1.25 / 5) x (10^9 / 10^7) = 0.25 x 10^2 = 25.
Therefore, the population of India is 25 times greater than the population of Spain.