alexabdercmur
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

Solved
Show answers

Ask an AI advisor a question