PSLE
Pamela had to sew 199 blouses. She sewed 7 blouses each day from Monday to Friday and 13 each day on Saturday and Sunday. Starting on a Tuesday, on which day of the week did Pamela finish sewing all the blouses? Give your answer in number. (Eg Mon = 1)
Number of weekdays that Pamela sewed on the first week = 4

Number of blouses that Pamela completed for from Tuesday to Sunday on the first week
= 4 x 7 + 2 x 13 
= 28 + 26
= 54

Number of blouses left to sew
= 199 - 54
= 145

Number of blouses that Pamela could sew per week from second week onwards
= 5 x 7 + 2 x 13
= 35 + 26
= 61

Number of weeks that Pamela needed to sew 145 blouses
= 145 ÷ 61
= 2 r 23

Number of days that Pamela needed to sew 23 blouses
= 23 ÷ 7
= 3 r 2

Pamela needed 1 more day to finish sewing the remaining 2 blouses.

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

Answer(s): 4