rtashinyo rtashinyo
  • 09-06-2020
  • Mathematics
contestada

X and Y together complete a task in 4 days, Y and Z together in 5 days. If they work independently, who will finish the work in the least time? A. X B. Y C. Z D. Not enough information to decide

Respuesta :

gami1234
gami1234 gami1234
  • 10-06-2020

Answer:

c, Z

Step-by-step explanation:

x+y=4

y+z=5

y=4-x

4-x+z=5

-x+z=1

z=1+x

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