Mr. Koh employed some painters and plumbers for his construction site. A plumber was paid $5 a day and a painter was paid $12 a day. Given that he employed 5 times as many painters as plumbers and a total of $130 was paid to these workers for the day, how many more painters than plumbers did Mr. Koh employ for his site?
|
Painters |
Plumbers |
Difference |
Total |
Number |
5 u |
1 u |
4 u |
|
Value |
12 |
5 |
|
|
Total value |
60 u |
5 u |
|
65 u |
Number of plumbers = 1 u
Number of painters = 5 x 1 u = 5 u
Total amount paid
= (5 u x 12) + (1 u x 5)
= 60 u + 5 u
= 65 u
65 u = 130
1 u = 130 ÷ 65 = 2
Number of more painters than plumbers
= 5 u - 1 u
= 4 u
= 4 x 2
= 8
Answer(s): 8