PSLE
Winnie had to sew 292 windbreakers. She sewed 8 windbreakers each day from Monday to Friday and 13 each day on Saturday and Sunday. Starting on a Monday, on which day of the week did Winnie finish sewing all the windbreakers? Give your answer in number. (Eg Mon = 1)
Number of weekdays that Winnie sewed on the first week = 5

Number of windbreakers that Winnie completed for from Monday to Sunday on the first week
= 5 x 8 + 2 x 13 
= 40 + 26
= 66

Number of windbreakers left to sew
= 292 - 66
= 226

Number of windbreakers that Winnie could sew per week from second week onwards
= 5 x 8 + 2 x 13
= 40 + 26
= 66

Number of weeks that Winnie needed to sew 226 windbreakers
= 226 ÷ 66
= 3 r 28

Number of days that Winnie needed to sew 28 windbreakers
= 28 ÷ 8
= 3 r 4

Winnie needed 1 more day to finish sewing the remaining 4 windbreakers.

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

Answer(s): 4