Question
P6.SP.JC.19010101-A1
If John and Pierre paint a house, they take 30 days to finish painting. If David and John paint the same house, they take 6 days to finish painting. If Pierre and Justin paint the same house, they take 15 days to finish painting. How many days do David and Justin take to paint the house if they work together?
4 m
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Primary 6 SPEED P6.SP.JC.19010101

02 Jun 2024, 04:27 PM

If John and Pierre paint a house, they take 30 days to finish painting. If David and John paint the same house, they take 6 days to finish painting. If Pierre and Justin paint the same house, they take 15 days to finish painting. How many days do David and Justin take to paint the house if they work together?
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