Mr. Teo employed some plumbers and painters for his construction site. A painter was paid $10 a day and a plumber was paid $19 a day. Given that he employed 4 times as many plumbers as painters and a total of $258 was paid to these workers for the day, how many less plumbers than painters did Mr. Teo employ for his site?
| |
Plumbers |
Painters |
Difference |
Total |
| Number |
4 u |
1 u |
3 u |
|
| Value |
19 |
10 |
|
|
| Total value |
76 u |
10 u |
|
86 u |
Number of painters = 1 u
Number of plumbers = 4 x 1 u = 4 u
Total amount paid
= (4 u x 19) + (1 u x 10)
= 76 u + 10 u
= 86 u
86 u = 258
1 u = 258 ÷ 86 = 3
Number of less painters than plumbers
= 4 u - 1 u
= 3 u
= 3 x 3
= 9
Answer(s): 9
