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0 / 60 seg.
If three cats catch three mice in three minutes, how many cats would be needed to catch 100 mice in 100 minutes?
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Clue
THE SAME THREE CATS WOULD DO. SINCE THESE THREE CATS ARE AVERAGING ONE MOUSE PER MINUTE, GIVEN 100 MINUTES, THE CATS COULD CATCH 100 MICE
5 CATS. THE SAME FIVE COULD KEEP CATCHING 5 MICE EVERY 5 MINUTES FOR 100 MINUTES. ALTERNATIVELY: 1 CAT CAN CATCH 1 MICE IN 5 MINUTES. 1 CAT CAN CATCH 20 (1×20) MICE IN 100 (5×20) MINUTES. THEREFORE, 5 CATS CAN CATCH 100 MICE IN 100 MINUTES
ABSOLUTELY NOTHING, AS 80 MINUTES EQUALS AN HOUR AND TWENTY MINUTES
SHE WAITS UNTIL THE GUARD IS INSIDE HIS HUT, THEN WALKS HALFWAY ACROSS BEFORE STARTING TO WALK BACK. THE GUARD, SEING SHE HAS NO PAPERS, SENDS HER "BACK"
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