Explicație pas cu pas:
1 grad = 60 minute
2 grade = 120minute
45 grade 50 minute + 85 grade 48 minute 24 secunde + 120 grade 21 minute 36 secunde = 250 grade 119 minute 60 secunde = 250 grade 120 minute = 252 grade
360 grade - 252 grade = 108 grade
raspuns corect 108 grade
