Question
40 min 9 s - 19 min 30 s = (a) _____  min (b) _____ s
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

40 min 9 s - 19 min 30 s = (a) _____  min (b) _____ s