srihithanelluri
srihithanelluri srihithanelluri
  • 13-03-2022
  • Mathematics
contestada

3 workers can do a job in 28 hours. How many more workers are needed to do this job in 12 hours?

Respuesta :

Laita
Laita Laita
  • 13-03-2022

Answer:

7 workers

Step-by-step explanation:

[tex]\frac{workers first time}{workers second time} = \frac{hours second time}{hours first time}[/tex]

[tex]\frac{3}{x} = \frac{12}{28}[/tex]

cross multiply and it becomes

12x = 3x28

12x = 84

x = 84/12

x = 7 workers

Answer Link
mjl2011ljm
mjl2011ljm mjl2011ljm
  • 17-03-2022

Answer

4

Step-by-step explanation:

3/28=x/12

that is 7 and you need to find how many more workers so you subtract

7-3=4

Answer Link

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