A) 6 h
B) 7 h
C) 8 h
D) 9 h
Correct Answer: A
Solution :
Part of the cistern filled by both pipes in 1 h \[=\frac{1}{10}+\frac{1}{15}=\frac{3+2}{30}=\frac{1}{6}\] \[\therefore \] The cistern will be filled in 6 h.You need to login to perform this action.
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