A) \[6\frac{1}{2}\,h\]
B) 6 h
C) \[5\frac{1}{2}\,h\]
D) 5 h
Correct Answer: B
Solution :
A does 20% less work than B. \[\therefore \] Ratio of time taken \[=5:4\] A completes a work in \[\frac{15}{2}\,h\] \[\therefore \] Time taken by B to do the same work \[=\frac{15}{2}\times \frac{4}{5}=6\,h\]You need to login to perform this action.
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