Alarm clock

Peter has an inaccurate alarm clock. He found that he was exactly 4 minutes late every hour. At 21:30 in the evening, he will set the exact time for it. What must alarm time be on him to wake him up at exactly 06:30?

Result

t2 = 7:06 Wrong answer

Step-by-step explanation:

t1=66030=6+6030=606 60+30=60360+30=60390=213=621=6.5  h1=216030=21+6030=6021 60+30=601260+30=601290=243=2121=21.5 h=(t1+24)h1=(213+24)243=9 h  t2=t1+h 604=213+9 604=7.1=7:06



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