PSLE
Cathy had to sew 199 windbreakers. She sewed 8 windbreakers each day from Monday to Friday and 14 each day on Saturday and Sunday. Starting on a Thursday, on which day of the week did Cathy finish sewing all the windbreakers? Give your answer in number. (Eg Mon = 1)
Number of weekdays that Cathy sewed on the first week = 2

Number of windbreakers that Cathy completed for from Thursday to Sunday on the first week
= 2 x 8 + 2 x 14 
= 16 + 28
= 44

Number of windbreakers left to sew
= 199 - 44
= 155

Number of windbreakers that Cathy could sew per week from second week onwards
= 5 x 8 + 2 x 14
= 40 + 28
= 68

Number of weeks that Cathy needed to sew 155 windbreakers
= 155 ÷ 68
= 2 r 19

Number of days that Cathy needed to sew 19 windbreakers
= 19 ÷ 8
= 2 r 3

Cathy needed 1 more day to finish sewing the remaining 3 windbreakers.

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

Answer(s): 3