alexabdercmur
22.11.2020 •
English
Jeff can put shingles on a house in 9 hours while David can shingle the same house in 6 hours. If the two work together, how long would it take them to shingle the house?
about 4 hours and 30 minutes
about 4 hours
about 3 hours and 30 minutes
about 3 hours
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Ответ:
first person point of view