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2009-09-26T15:44:20+02:00
Wyraź:
A) w sekundach:
25 min=1500s
2 min 3 s=123
1 min 20 s=80
2 h 5 s=7205
B) w minutach:
8 h 20 min=500
3 h 15 min=195
20 h 10 s= 1200 i 1/6
2009-09-26T15:46:00+02:00
A) w sekundach:
25 min = 25 * 60 = 1500 s
2 min 3 s = 2 * 60 + 3 = 123 s
1 min 20 s = 60 * 1 + 20 = 80 s
2 h 5 s = 60 * 2 * 60 + 5 = 7205s
B) w minutach:
8 h 20 min = 8 * 60 + 20 = 500 min
3 h 15 min = 3 * 60 + 15 = 195 min
20 h 10 s = 20 * 60 + 10 : 60 = 1200 ⅙ min
2009-09-26T15:54:46+02:00
A
25 min -> 1 min=60 s czyli 25min*60s=1500s
2 min 3 s=123s
1 min 20 s=80s
2 h 5 min -> 1h(60min)=60 min*60s=3600s -> 2h=7200s -> 5 min (1 min=60s czyli 60s*5 min=300s)
czyli 2h 5 min= 7200+300= 7500s

B
8 h 20 min -> (1h-60 min) czyli 8*60+20= 500 min
3 h 15 min= 3*60 min+15 min= 195 min
20 h 10s= 20*60min+1/6=1200+1/6