Marcos homework
Number of days: 3, 9, 12, 30
Number of hours: 3.25, 9.75, 13.0, 32.5
Marbella’s homework
Number of days: 4, 8, 20, 28
Number of hours: 4.2, 8.4, 21.0, 29.4
Based on the tables showing the hours of homework done by Marco and Maribella for different periods of time, which statement is correct?
Options:
Marco spends less time on homework per night
There is not enough information to tell who spends less time doing their homework
Maribella spends less time on homework per night
Marco and Maribella spend equal time doing their homework
The correct statement is: Marco spends less time on homework per night.
To determine which statement is correct, we need to compare the average time spent on homework per night by Marco and Maribella.
Let's calculate the average time spent on homework per night by dividing the total number of hours by the total number of days for each person.
For Marco:
Total number of days = 3 + 9 + 12 + 30 = 54
Total number of hours = 3.25 + 9.75 + 13.0 + 32.5 = 58.5
Average time per night for Marco = Total number of hours / Total number of days = 58.5 / 54 ≈ 1.0833 hours per night
For Maribella:
Total number of days = 4 + 8 + 20 + 28 = 60
Total number of hours = 4.2 + 8.4 + 21.0 + 29.4 = 63.0
Average time per night for Maribella = Total number of hours / Total number of days = 63.0 / 60 = 1.05 hours per night
Comparing the averages, we find that Marco spends slightly more time on homework per night compared to Maribella. Therefore, the correct statement is:
Marco spends less time on homework per night
To determine which statement is correct, we need to compare the average time spent on homework per night by Marco and Marbella.
To calculate the average time spent per night for Marco:
- Add up the number of hours of homework for each day: 3.25 + 9.75 + 13.0 + 32.5 = 58.5
- Divide the total hours by the number of days: 58.5 / 4 = 14.625
To calculate the average time spent per night for Marbella:
- Add up the number of hours of homework for each day: 4.2 + 8.4 + 21.0 + 29.4 = 63.0
- Divide the total hours by the number of days: 63.0 / 4 = 15.75
Comparing the results, we can see that Maribella spends more time on homework per night than Marco. Therefore, the correct statement is:
- Maribella spends less time on homework per night.