A) 6 days
B) 4 days
C) 7 days
D) 9 days
Correct Answer: D
Solution :
Shilpa's 1 day's work \[=\frac{1}{15}\] Shamita s 1 day's work \[=\frac{1}{24}\] (Shilpa + Shamita)'s 1 day's work \[=\frac{1}{15}+\frac{1}{24}=\frac{8+5}{120}=\frac{13}{120}\] \[\therefore \] Both together will complete the work in \[\frac{120}{13}\approx 9\] days
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