Question

The space program has 69 astronauts in outer space and 9 astronauts on Earth. What is the ratio of the number of astronauts on Earth to the number of astronauts in outer space?

Write your answer as two numbers separated by a colon (for example, 2:3).

Answer 1

To find the ratio of the number of astronauts on Earth (9) to the number of astronauts in outer space (69), we can write the ratio as:

\[
\text{Ratio} = \frac{\text{number of astronauts on Earth}}{\text{number of astronauts in outer space}} = \frac{9}{69}
\]

Next, we simplify the fraction \( \frac{9}{69} \). Both the numerator and the denominator can be divided by 9:

\[
\frac{9 \div 9}{69 \div 9} = \frac{1}{7}
\]

Thus, the simplified ratio of the number of astronauts on Earth to the number of astronauts in outer space is:

\[
1:7
\]

Therefore, the final answer is:

\[
\boxed{1:7}
\]