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The painter finishes painting the room in 6 hours and his assistant finishes it in 9 hoursHow long does it take to finish the same room if they work together? |
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Answer» Answer: 36 minutes Step-by-step EXPLANATION: remember that, the whole work is 1. PAINTER does the whole work at 6 hour.so he does 1÷6 work at 1 hour.assistant does the the whole work at 9 hour.so he does 1÷9 work at 1 hour.they work 5÷18 PART at 1 hour, they finish whole work at 18÷5 hour. so that,18×60=1080.1080÷5=216. 216-180=36 minutes |
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