Mr. Lu employed some plumbers and painters for his construction site. A painter was paid $10 a day and a plumber was paid $13 a day. Given that he employed 5 times as many plumbers as painters and a total of $300 was paid to these workers for the day, how many less plumbers than painters did Mr. Lu employ for his site?
| |
Plumbers |
Painters |
Difference |
Total |
| Number |
5 u |
1 u |
4 u |
|
| Value |
13 |
10 |
|
|
| Total value |
65 u |
10 u |
|
75 u |
Number of painters = 1 u
Number of plumbers = 5 x 1 u = 5 u
Total amount paid
= (5 u x 13) + (1 u x 10)
= 65 u + 10 u
= 75 u
75 u = 300
1 u = 300 ÷ 75 = 4
Number of less painters than plumbers
= 5 u - 1 u
= 4 u
= 4 x 4
= 16
Answer(s): 16
