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?

Question

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:

\[ \boxed{1:7} \]