Question 1206283
i did it this way.
building up from 1 tablet to 2 tablets to 3 tablets.
monday = day 1 of the week.
tuesday = day 2 of the week.
........
sunday = day 7 of the week.


one 10 day period = 10 days.
divide that by 7 and you get one 7 day period plus 3 days more.
day 3 = wednesday.
that was confirmed to be good.

two 10 day periods = 20 days.
divide that by 7 and you get two 7 day periods plus 6 days more.
day 6 would be saturday.
that was confirmed to be good.


three 10 day periods = 30 days.
divide that by 7 and you get four 7 day periods plus 2 days more.
day 2 would be tuesday.
that was confirmed to be good.


four 10 day periods = 40 days.
divide that by 7 and you get five 7 day periods plus 5 days more.
day 5 would be friday.


i confirmed with a module calculator that these results are accurate.


extending this to 25 ten day periods, you should get 250 / 7 = 35 seven day periods with 5 days left over.
day 5 would be friday.


teacher's answer does not appear to be right.
the solution looks like it's friday.


here'e the modulo calculator i used.


<a href = "https://www.calculatorsoup.com/calculators/math/modulo-calculator.php" target = "_blank">https://www.calculatorsoup.com/calculators/math/modulo-calculator.php</a>