To determine which activity the science club paid more per ticket, we need to calculate the price per ticket for both the space museum and the movies.
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Space Museum:
- Total cost: $170
- Total tickets: 40
- Price per ticket for the space museum: \[ \frac{170}{40} = 4.25 \]
- So, each ticket for the space museum costs $4.25.
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Movies:
- Total cost: $180
- Total tickets: 45
- Price per ticket for the movies: \[ \frac{180}{45} = 4.00 \]
- So, each ticket for the movies costs $4.00.
Now we compare the two prices per ticket:
- Space Museum: $4.25
- Movies: $4.00
Since $4.25 (space museum) is greater than $4.00 (movies), the science club paid more per ticket for the space museum.
Therefore, the correct answer is: C. The space museum because the ratio for the space museum is higher than the ratio for the movies.