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Answer:
1hour and 45min
5.40min
6.the amount of time that the grade 4 pupils started practicing their dance number
7.Time started 2:18 time finished 3:43
8.subtraction
9.3:43-2:18= n
10.the amount of time that the grade 4 pupils spend in practicing their dance number is 1 hour and 25 min
Step-by-step explanation:
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