Question
Ivan started his trumpet practice at 8.20 a.m. and ended his trumpet practice at 2.15 p.m. He took a 10 break in between his trumpet practice. How much time did Ivan spend on his trumpet practice?
2 m

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Ivan started his trumpet practice at 8.20 a.m. and ended his trumpet practice at 2.15 p.m. He took a 10 break in between his trumpet practice. How much time did Ivan spend on his trumpet practice?