Question

Marco's homework
number of days number of hours
3 3.25
9 9.75
12 13.0
30 32.5

Maribella's homework
number of days number of hours
4 4.2
8 8.4
20 21.0
28 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?

A. Marco and Maribella spend equal time doing their homework.
B. Marco spends less time on homework per night.
C. There is not enough information to tell who spends less time doing their homework.
D. Maribella spends less time on homework per night.

Answer 1

To compare the time spent on homework by Marco and Maribella, we can calculate the average number of hours they spend per day by dividing the total number of hours by the number of days.

For Marco:
Average number of hours per day = (3.25 + 9.75 + 13.0 + 32.5) / (3 + 9 + 12 + 30) = 58.5 / 54 = 1.083 hours per day

For Maribella:
Average number of hours per day = (4.2 + 8.4 + 21.0 + 29.4) / (4 + 8 + 20 + 28) = 62.0 / 60 = 1.033 hours per day

Comparing the averages, we can see that Marco spends more time on homework per day than Maribella. Therefore, the correct statement is:

B. Marco spends less time on homework per night.