If Susan can paint a room in 2 hours and mary can paint the same room in 8 hours.How long will it take 2gether

Top 3 Answers

A few days ago

charonnisis

Favorite Answer

Assume the room is 8 parts

Susan = 4parts/hr –> .0667parts/min

Mary= 1 part/hr –> .0167parts/min

8 = .0667(x) + .0167(x)

8 = .0834(x)

x = 95.9min –> 1hour 36min

A few days ago

G.V.

1/2 t + 1/8 t = 1

5/8 t = 1

t = 8/5 hr. = 1 3/5 hr = 1 hr 36 min

A few days ago

Anonymous

4 hours.

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