Lu2canelhrReatzron Lu2canelhrReatzron
  • 21-11-2016
  • Mathematics
contestada

Brandon can paint a fence in 12 hours and Elaine can paint the same fence in 11 hours. How long will they take to paint the fence if they work together?
A) 5 13/24 hr
B) 5 ¾ hr
C) 11 ½ hr
D) 5 17/23 hr

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johnkellock
johnkellock johnkellock
  • 21-11-2016
C) 11 ½ hr 
12/2 + 11/2 = 11.5
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