Clock - Arithmetic Aptitude Questions and Answers

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How much does a watch lose per day, if its hands coincide every 64 minutes?

32 $\frac { 8} { 11}$ min

36 $\frac { 5} { 11}$ min

90 min.

96 min.

Answer : Option A

Explanation :

55 min. spaces are covered in 60 min.

60 min. spaces are covered in[ $\frac {60 } { 55 }$ x60]min=65 $\frac { 5 } { 11 }$ min

Loss in 64 min. =[65 $\frac { 5 } { 11 }$ -64]= $\frac { 16 } { 11 }$ min

Loss in 24 hrs =[ $\frac { 16 } { 11 }$ x $\frac { 1 } { 64 }$ x24x60]min=32 $\frac { 8} { 11}$ min

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