Question

Two watches, one of which gained at the rate of 1 min. daily, were set correctly at noon on the first January 1978. When did the watches indicate the same time?

• A. Dec. $27,1978$ midnight
• B. Dec. $26,1978$ noon
• C. Dec. $25,1978$ noon
• D. Dec. $28,1978$ noon
• E. Dec. $27,1978$ noon

Answer 1

Answer: (B)

Dec. $26,1978$ noon

As in $12$ hours the hand are $22$ times at right angle.
In $6$ hours, hands are $22$ times at right angle
$=\frac{22\times 6}{12}=11times$.