PSLE
Abi had to sew 267 coats. She sewed 8 coats each day from Monday to Friday and 12 each day on Saturday and Sunday. Starting on a Thursday, on which day of the week did Abi finish sewing all the coats? Give your answer in number. (Eg Mon = 1)
Number of weekdays that Abi sewed on the first week = 2

Number of coats that Abi completed for from Thursday to Sunday on the first week
= 2 x 8 + 2 x 12 
= 16 + 24
= 40

Number of coats left to sew
= 267 - 40
= 227

Number of coats that Abi could sew per week from second week onwards
= 5 x 8 + 2 x 12
= 40 + 24
= 64

Number of weeks that Abi needed to sew 227 coats
= 227 ÷ 64
= 3 r 35

Number of days that Abi needed to sew 35 coats
= 35 ÷ 8
= 4 r 3

Abi needed 1 more day to finish sewing the remaining 3 coats.

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

Answer(s): 5