PSLE
Dana had to sew 183 jackets. She sewed 7 jackets each day from Monday to Friday and 11 each day on Saturday and Sunday. Starting on a Monday, on which day of the week did Dana finish sewing all the jackets? Give your answer in number. (Eg Mon = 1)
Number of weekdays that Dana sewed on the first week = 5

Number of jackets that Dana completed for from Monday to Sunday on the first week
= 5 x 7 + 2 x 11 
= 35 + 22
= 57

Number of jackets left to sew
= 183 - 57
= 126

Number of jackets that Dana could sew per week from second week onwards
= 5 x 7 + 2 x 11
= 35 + 22
= 57

Number of weeks that Dana needed to sew 126 jackets
= 126 ÷ 57
= 2 r 12

Number of days that Dana needed to sew 12 jackets
= 12 ÷ 7
= 1 r 5

Dana needed 1 more day to finish sewing the remaining 5 jackets.

Day of the week that Dana completed her sewing
= 1 + 1
= 2 (Tue)

Answer(s): 2