PSLE
Jean had to sew 116 vests. She sewed 7 vests each day from Monday to Friday and 14 each day on Saturday and Sunday. Starting on a Friday, on which day of the week did Jean finish sewing all the vests? Give your answer in number. (Eg Mon = 1)
Number of weekdays that Jean sewed on the first week = 1

Number of vests that Jean completed for from Friday to Sunday on the first week
= 1 x 7 + 2 x 14 
= 7 + 28
= 35

Number of vests left to sew
= 116 - 35
= 81

Number of vests that Jean could sew per week from second week onwards
= 5 x 7 + 2 x 14
= 35 + 28
= 63

Number of weeks that Jean needed to sew 81 vests
= 81 ÷ 63
= 1 r 18

Number of days that Jean needed to sew 18 vests
= 18 ÷ 7
= 2 r 4

Jean needed 1 more day to finish sewing the remaining 4 vests.

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

Answer(s): 3