Question

Calculati:

a) 3h 25 min+1h 15 min;
b) 2h 40min-1h 20min;
c) 12 h 30 min+5 h 25 min + 3h 40 min;
d) 25 min 30s- 10 min 40s;
e) 1h 25min 15s+2h 15 min 45s;
f) 3h 10 min 20s- 1h 25 min 30s.

Answer 1

a) 4h 40 min
b) 1h 20 min
c) 21h 35 min
d) 14 min 50s
e) 3h 46 min 
f) 1h 16 min 50s