Question
Luis started his drum practice at 9.40 a.m. and ended his drum practice at 1.10 p.m. He took a 20 break in between his drum practice. How much time did Luis spend on his drum practice?
2 m

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Luis started his drum practice at 9.40 a.m. and ended his drum practice at 1.10 p.m. He took a 20 break in between his drum practice. How much time did Luis spend on his drum practice?