Final answer:
c) $72.The calculated total money collected by the end of the week is $60, which does not match the given options. The closest match would be $64, but this might be due to a typo.
Step-by-step explanation:
The correct answer is option b) $64. To solve this, first calculate the total amount of money brought in by the 3 students on the first day by multiplying the number of students by the amount each brought in, which is 3 students x $4/student = $12.
Then, add the $48 that was collected by the end of the week to the initial $12. So, $12 + $48 = $60. However, since the options you provided do not include $60, there appears to be a discrepancy. Given the information and the context, the closest match to the calculation would be $64, but this seems to include a typo or mistake in the listed options.
The correct answer is option c) $72.
To calculate the total amount of money the class has by the end of the week, we need to add up the amount of money brought in on the first day and the additional amount added throughout the week.
On the first day, 3 students each bring $4, so the total amount brought in is 3 * $4 = $12.
By the end of the week, $48 is added to the amount brought in on the first day, so the total amount by the end of the week is $12 + $48 = $60.