Question
Sam took 1 hr 40 min to paint a fence and 40 min less to paint a chair. He completed painting the fence and the chair at 10.20 a.m. At what time did he start painting?
2 m

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Sam took 1 hr 40 min to paint a fence and 40 min less to paint a chair. He completed painting the fence and the chair at 10.20 a.m. At what time did he start painting?