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.
Answer Posted / p73_73@yahoo.com
1. Start both clocks
2. When 7 min clock complete, turn it so that it restarts.
3. when 9 min clock finesh, turn 7 min clocks (It has 2
mint only)
4. when 7 min clock fineshs, 11 min complete.
| Is This Answer Correct ? | 19 Yes | 4 No |
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