PSLE
Owen and Cody were paid a total of $2140 for a job they did. Cody was paid $1640 less than Owen.

1. How much was Cody paid for the job?
2. Owen and Cody were paid based on the number of days they worked. Owen worked 5 times as many days as Cody. Owen was paid $8 more than Cody per day. How many days did Owen work? 

(a)
Amount that Cody was paid = 1 u
Amount that Owen was paid = 1 u + 1640

Total amount paid
= 1 u + 1 u + 1640
= 2 u + 1640

2 u + 1640 = 2140
2 u = 2140 - 1640
2 u = 500

1 u = 500 ÷ 2 = 250

Amount that Cody was paid
= 1 u
= $250

(b)
Amount that Owen was paid
= 1 u + 1640
= 250 + 1640
= $1890

Owen worked 5 times as many days as Cody.

5 sets of Owen's salary = $1890

1 set of Owen's salary
= 1890 ÷ 5
= $378

1 set of Cody's salary = $250

Difference between each set of Owen's and Cody's salaries
= 378 - 250
= $128

Number of days in 1 set
= 128 ÷ 8
= 16

Number of days that Owen worked
= 5 x 16
= 80

Answer(s): (a) $250; (b) 80