A clock was exactly on time at noon on Monday. At 8 P.M. on Tuesday it was 64 seconds slow. At that same rate, how much did it lose in 1/2 hour?

Question

A clock was exactly on time at noon on Monday. At 8 P.M. on Tuesday it was 64 seconds slow. At that same rate, how much did it lose in 1/2 hour?

Answer 1

32 hours between noon Monday and 8 pm Tuesday.

That is 64 half hours - whoa look at that

 

64 /62 = 1

The clock lost 1 second every half hour.