PSLE
John and Caden were paid a total of $3300 for a job they did. Caden was paid $1220 less than John.

1. How much was Caden paid for the job?
2. John and Caden were paid based on the number of days they worked. John worked 2 times as many days as Caden. John was paid $10 more than Caden per day. How many days did John work? 

(a)
Amount that Caden was paid = 1 u
Amount that John was paid = 1 u + 1220

Total amount paid
= 1 u + 1 u + 1220
= 2 u + 1220

2 u + 1220 = 3300
2 u = 3300 - 1220
2 u = 2080

1 u = 2080 ÷ 2 = 1040

Amount that Caden was paid
= 1 u
= $1040

(b)
Amount that John was paid
= 1 u + 1220
= 1040 + 1220
= $2260

John worked 2 times as many days as Caden.

2 sets of John's salary = $2260

1 set of John's salary
= 2260 ÷ 2
= $1130

1 set of Caden's salary = $1040

Difference between each set of John's and Caden's salaries
= 1130 - 1040
= $90

Number of days in 1 set
= 90 ÷ 10
= 9

Number of days that John worked
= 2 x 9
= 18

Answer(s): (a) $1040; (b) 18