- A12 hours
- B6 hours
- C8 hours
- D4 hours
Step-by-Step Solution
. Adding: . Subtracting: . So .
Answer: B) 6 hours
Two pipes: running A for 2 hours and B for 3 hours fills 2/3 of a tank; running A for 3 hours and B for 2 hours fills 7/12 of it. How long does B take alone?
Class 10Work Rates with Two UnknownsAlgebra — Systems of Equations
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