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Mathematics, 01.11.2019 04:31 deflox74

Anew building needed 9 windows. the builder had already i stalled 6 of them. if it takes 6 hours to install each window. how long will it take him to install the test?

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Anew building needed 9 windows. the builder had already i stalled 6 of them. if it takes 6 hours to...
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