Question 1158273
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Part a


If today is Friday, then 7 days from now is also Friday. Same goes for 14 days, and 21 days. 


We have 25-21 = 4 days left over. Adding 4 days to Friday leads to Tuesday


Notice how 25/7 = 3 remainder 4. That "remainder 4" bit is directly connected to adding those 4 days. 


Answer: <font color=red>Tuesday</font>

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Part b


32/7 = 4.57 approximately
32 = 28+4
32 = 4*7+4
32 = <font color=green>4</font>*7+<font color=blue>4</font>
32/7 = <font color=green>4</font> <font color=blue>remainder 4</font>


Focus only on the remainder
We will be subtracting 4 days from Friday since we are rewinding into the past this time. 


Friday minus 4 days lands on Monday.


Answer: <font color=red>Monday</font>

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