PSLE
Zoe had to sew 93 shirts. She sewed 6 shirts each day from Monday to Friday and 9 each day on Saturday and Sunday. Starting on a Thursday, on which day of the week did Zoe finish sewing all the shirts? Give your answer in number. (Eg Mon = 1)
Number of weekdays that Zoe sewed on the first week = 2

Number of shirts that Zoe completed for from Thursday to Sunday on the first week
= 2 x 6 + 2 x 9 
= 12 + 18
= 30

Number of shirts left to sew
= 93 - 30
= 63

Number of shirts that Zoe could sew per week from second week onwards
= 5 x 6 + 2 x 9
= 30 + 18
= 48

Number of weeks that Zoe needed to sew 63 shirts
= 63 ÷ 48
= 1 r 15

Number of days that Zoe needed to sew 15 shirts
= 15 ÷ 6
= 2 r 3

Zoe needed 1 more day to finish sewing the remaining 3 shirts.

Day of the week that Zoe completed her sewing
= 2 + 1
= 3 (Wed)

Answer(s): 3