PSLE
Lynn had to sew 177 blazers. She sewed 5 blazers each day from Monday to Friday and 8 each day on Saturday and Sunday. Starting on a Tuesday, on which day of the week did Lynn finish sewing all the blazers? Give your answer in number. (Eg Mon = 1)
Number of weekdays that Lynn sewed on the first week = 4

Number of blazers that Lynn completed for from Tuesday to Sunday on the first week
= 4 x 5 + 2 x 8 
= 20 + 16
= 36

Number of blazers left to sew
= 177 - 36
= 141

Number of blazers that Lynn could sew per week from second week onwards
= 5 x 5 + 2 x 8
= 25 + 16
= 41

Number of weeks that Lynn needed to sew 141 blazers
= 141 ÷ 41
= 3 r 18

Number of days that Lynn needed to sew 18 blazers
= 18 ÷ 5
= 3 r 3

Lynn needed 1 more day to finish sewing the remaining 3 blazers.

Day of the week that Lynn completed her sewing
= 3 + 1
= 4 (Thu)

Answer(s): 4