A few days ago
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
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
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
0
A few days ago
1/2 t + 1/8 t = 1
5/8 t = 1
t = 8/5 hr. = 1 3/5 hr = 1 hr 36 min
0
A few days ago
4 hours.
0
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