DSSSB · Mathematics
A and B can paint a fence together in 10 hours. B and C can do the same in 12 hours, and A and C, in 15 hours. If all three work together for 3 hours, after which A leaves, how much total time will it take to paint the entire fence?
- 7.5 hours
- 9.5 hours
- 6.5 hours
- 10.5 hours
A and B can paint a fence together in 10 hours. B and C can do the same in 12 hours, and A and C, in 15 hours. If all three work together for 3 hours, after which A leaves, how much total time will it take to paint the entire fence?
- 7.5 hours
- 9.5 hours
- 6.5 hours
- 10.5 hours
Answer and detailed solution are available in the protected study screen.
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