Mathematics, 18.12.2020 01:00, coochieboi

A builder was building a fence. In the morning, he worked for 2/5 of an hour. In the afternoon, he worked for 9/10 of an hour. How many times as long as in the morning did he work in the afternoon?

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A builder was building a fence. In the morning, he worked for 2/5 of an hour. In the afternoon, he w...