PSLE
Roshel had to sew 123 sweaters. She sewed 6 sweaters each day from Monday to Friday and 12 each day on Saturday and Sunday. Starting on a Monday, on which day of the week did Roshel finish sewing all the sweaters? Give your answer in number. (Eg Mon = 1)
Number of weekdays that Roshel sewed on the first week = 5

Number of sweaters that Roshel completed for from Monday to Sunday on the first week
= 5 x 6 + 2 x 12 
= 30 + 24
= 54

Number of sweaters left to sew
= 123 - 54
= 69

Number of sweaters that Roshel could sew per week from second week onwards
= 5 x 6 + 2 x 12
= 30 + 24
= 54

Number of weeks that Roshel needed to sew 69 sweaters
= 69 ÷ 54
= 1 r 15

Number of days that Roshel needed to sew 15 sweaters
= 15 ÷ 6
= 2 r 3

Roshel needed 1 more day to finish sewing the remaining 3 sweaters.

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

Answer(s): 3