Mr. Chan employed some welders and painters for his construction site. A painter was paid $7 a day and a welder was paid $19 a day. Given that he employed 3 times as many welders as painters and a total of $192 was paid to these workers for the day, how many less welders than painters did Mr. Chan employ for his site?
|
Welders |
Painters |
Difference |
Total |
Number |
3 u |
1 u |
2 u |
|
Value |
19 |
7 |
|
|
Total value |
57 u |
7 u |
|
64 u |
Number of painters = 1 u
Number of welders = 3 x 1 u = 3 u
Total amount paid
= (3 u x 19) + (1 u x 7)
= 57 u + 7 u
= 64 u
64 u = 192
1 u = 192 ÷ 64 = 3
Number of less painters than welders
= 3 u - 1 u
= 2 u
= 2 x 3
= 6
Answer(s): 6