Question
John started his trumpet practice at 8.50 a.m. and ended his trumpet practice at 1.20 p.m. He took a 10 break in between his trumpet practice. How much time did John spend on his trumpet practice?
2 m

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John started his trumpet practice at 8.50 a.m. and ended his trumpet practice at 1.20 p.m. He took a 10 break in between his trumpet practice. How much time did John spend on his trumpet practice?