Mr. Sih employed some welders and painters for his construction site. A painter was paid $9 a day and a welder was paid $17 a day. Given that he employed 3 times as many welders as painters and a total of $180 was paid to these workers for the day, how many less welders than painters did Mr. Sih employ for his site?
| |
Welders |
Painters |
Difference |
Total |
| Number |
3 u |
1 u |
2 u |
|
| Value |
17 |
9 |
|
|
| Total value |
51 u |
9 u |
|
60 u |
Number of painters = 1 u
Number of welders = 3 x 1 u = 3 u
Total amount paid
= (3 u x 17) + (1 u x 9)
= 51 u + 9 u
= 60 u
60 u = 180
1 u = 180 ÷ 60 = 3
Number of less painters than welders
= 3 u - 1 u
= 2 u
= 2 x 3
= 6
Answer(s): 6
