a boy loves one kilometer in 12 minutes how long will it take to run 400 meter
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time taken to complete 1 meter is = (12*60)/1000
= 720/1000
= 0.72
boys take 0.72 sec to cover 1 meter
to complete 400 meter, it takes= 400*0.72
= 288 sec
IN minutes =288/60
= 4.8 min
the answer is 4.8 min
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