trinfor2374 trinfor2374

05-12-2017
Mathematics

contestada

John can paint a room in 3 hours susan can paint the same room in 2 hours how long will it take if they work together

Respuesta :

jorel1380 jorel1380

08-12-2017

Let n be the time it takes them to paint the room together. Then:
1/3+1/2=1/n
2n+3n=6
n=6/5 hours working together
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