Question

China and India are the most populous countries in the world. China’s population is approximately 1.45×10 power of nine while India is population population is approximately one, 400, 000, 000 how many more people live in China than in India is the answer 5×10 power of 85×10 power of 95×10 power of 10 or 5×10 power of seven.

Answer 1

To determine how many more people live in China than in India, we need to perform the calculation based on the provided population figures.

1. **Population of China**: \( 1.45 \times 10^9 \)
2. **Population of India**: \( 1,400,000,000 \) which can be expressed in scientific notation as \( 1.4 \times 10^9 \).

Next, we calculate the difference:

\[
\text{Difference} = \text{Population of China} - \text{Population of India}
\]

Substituting the values:
\[
\text{Difference} = (1.45 \times 10^9) - (1.4 \times 10^9)
\]

To subtract these, we align the powers of ten:
\[
\text{Difference} = (1.45 - 1.4) \times 10^9 = 0.05 \times 10^9
\]

Now, we can convert \( 0.05 \times 10^9 \) into a more standard scientific notation:
\[
0.05 \times 10^9 = 5 \times 10^{-2} \times 10^9 = 5 \times 10^7
\]

So, the difference in population between China and India is \( 5 \times 10^7 \).

The correct answer is **\( 5 \times 10^7 \)**.