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1 January, 20:54

Anthony practice Swimming by completing 10 laps everyday every time he practice he improve his time by 3 seconds if it took Anthony 20 minutes to complete 10 laps one week ago what is his time today

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  1. 2 January, 00:03
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    Convert 20 minutes into seconds by multiplying 20•60=1200 because there are 60 seconds in a minute. Then, multiply 3•7=21 because one week has seven days. Next, subtract 1200-21=1179. To convert back into minutes, divide by 60 to get 19 and 13/20. Convert 13/20=?/60 because 60 seconds/minute and he final answer is 19 minutes and 39 seconds.
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