1 minuta=60sekund
30minut=30*60=1800sekund
1 kwadrans to 15 minut , jedna minuta to 60 sekund a więc jeden kwadrans to:
15 x 60 = 900 sekund
a 30 min to
30 x 60 =1800 sekund.
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1 minuta=60sekund
30minut=30*60=1800sekund
1 kwadrans to 15 minut , jedna minuta to 60 sekund a więc jeden kwadrans to:
15 x 60 = 900 sekund
a 30 min to
30 x 60 =1800 sekund.