A) 11 am
B) 12 pm
C) 12.30 pm
D) 1.00 pm
Correct Answer: D
Solution :
[d] Let the time be t hours after 6 am. \[\therefore \] \[\frac{1}{15}\times t+\frac{(t-1)}{20}+\frac{(t-2)}{30}+\frac{(t-3)}{60}=1\] \[\therefore \] \[4t+3(t-1)+2(t-2)+(t-3)=60\] \[\therefore \,\,\]t = 7 hours \[\therefore \,\,\]it is filled at 1 pmYou need to login to perform this action.
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