PSLE
Elyse had to sew 154 blouses. She sewed 6 blouses each day from Monday to Friday and 10 each day on Saturday and Sunday. Starting on a Friday, on which day of the week did Elyse finish sewing all the blouses? Give your answer in number. (Eg Mon = 1)
Number of weekdays that Elyse sewed on the first week = 1

Number of blouses that Elyse completed for from Friday to Sunday on the first week
= 1 x 6 + 2 x 10 
= 6 + 20
= 26

Number of blouses left to sew
= 154 - 26
= 128

Number of blouses that Elyse could sew per week from second week onwards
= 5 x 6 + 2 x 10
= 30 + 20
= 50

Number of weeks that Elyse needed to sew 128 blouses
= 128 ÷ 50
= 2 r 28

Number of days that Elyse needed to sew 28 blouses
= 28 ÷ 6
= 4 r 4

Elyse needed 1 more day to finish sewing the remaining 4 blouses.

Day of the week that Elyse completed her sewing
= 4 + 1
= 5 (Fri)

Answer(s): 5