A) \[59\frac{7}{12}\] minutes past 3
B) 4 pm
C) \[58\frac{7}{12}\] minutes past 3
D) \[2\frac{3}{11}\] minute past 4
E) None of these
Correct Answer: B
Solution :
Explanation Option [b] is correct. Time from 7 am to 4:15 pm \[= 9 hrs 15 minute =\,\,\frac{37}{4}hrs\] 3 minutes 5 seconds of this clock = 3 minute of the correct clock \[\Rightarrow \,\,\,\frac{37}{720}\,\,hrs\] of this clock \[=\,\,\frac{1}{20}\,hrs\] of the correct clock. \[\Rightarrow \,\,\,\frac{37}{4}\,hrs\] of this clock \[=\,\,\left( \frac{1}{20}\times \frac{720}{37}\times \frac{37}{4} \right)\] hrs of the correct clock. = 9 hrs of the correct clock. \[\therefore \] The correct time is 9 hrs after 7 am i.e., 4 pm.
You need to login to perform this action.
You will be redirected in
3 sec
