Question
P6.SP.JC.19010101-A1
If Owen and Justin paint a house, they take 40 days to finish painting. If David and Owen paint the same house, they take 10 days to finish painting. If Justin and Riordan paint the same house, they take 20 days to finish painting. How many days do David and Riordan take to paint the house if they work together?
4 m
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Primary 6 SPEED P6.SP.JC.19010101

24 May 2024, 05:37 PM

If Owen and Justin paint a house, they take 40 days to finish painting. If David and Owen paint the same house, they take 10 days to finish painting. If Justin and Riordan paint the same house, they take 20 days to finish painting. How many days do David and Riordan take to paint the house if they work together?
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