There are two sand clocks(timers) one complete totally in 7
minutes and other in 9-minutes we have to calculate with
this timers and bang the bell after completion of 11-
minutes!plz give me the solution.
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Answer Posted / hemanthdeva
Hi Friends,
1. Start both clocks (7 and 9 mins)
2. When 7 min sand clock completes sand , turn it so that it restarts.
3. when 9 min clock finish, again turn 7 min clocks immediately (It has 2 mint only)
4. when 7 min clock finishes second time, 11 min will be competed.
Thats it... :)
| Is This Answer Correct ? | 7 Yes | 1 No |
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