The road to school takes Lena 1/5 hours, belief-1/6 hours, at roll-1/2 hour. in what time does each girl have to leave the house if at school it is necessary to be 8 h 15 minutes?

382
Lena-1/5 of hour = 60:5=12 (min.) Belief-1/6chasa =60:6=10 (min.) Katya-1/2chasa =60:2=30 (min.) 1) 8 h 15 min. - 12 min. = 8 h 03 min. - Lena 2) 8 h 15 min. - 10 min. = 8 h 05 min. - Belief 3) 8 h 15 min. - 30 min. = 7 h 45 min. - Katya
150
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