Mr. Neo employed some welders and painters for his construction site. A painter was paid $10 a day and a welder was paid $15 a day. Given that he employed 3 times as many welders as painters and a total of $220 was paid to these workers for the day, how many less welders than painters did Mr. Neo employ for his site?
| |
Welders |
Painters |
Difference |
Total |
| Number |
3 u |
1 u |
2 u |
|
| Value |
15 |
10 |
|
|
| Total value |
45 u |
10 u |
|
55 u |
Number of painters = 1 u
Number of welders = 3 x 1 u = 3 u
Total amount paid
= (3 u x 15) + (1 u x 10)
= 45 u + 10 u
= 55 u
55 u = 220
1 u = 220 ÷ 55 = 4
Number of less painters than welders
= 3 u - 1 u
= 2 u
= 2 x 4
= 8
Answer(s): 8
