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Aliun [14]
4 years ago
13

Water needs to be removed from an underground chamber before work can commence. When the water was at a depth of 3m, five suctio

n pipes were used and emptied the chamber in 4 hours. If the water is now at a depth of 5m (same cross-section), and you want to empty the chamber in 10 hours time, how many pipes need to be used?
Mathematics
1 answer:
fredd [130]4 years ago
8 0
We would need to use 4 pipes to be sure to empty the chamber within 10 hours time. 

Work: 
5*5/3*4/10=3 1/3 pipes (but we must round since we cant have 1/3 of a pipe running. This means that we must have 4 pipes.
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