Problema Solution
Two pipes with different diameters can be used together to fill a reservoir in 5 hours. If the large pipes will fill the reservoir in 4 fewer hours than the smaller pipe, what time is needed for the larger pipe to fill the reservoir?
Answer provided by our tutors
let time taken by smaller pipe = x hrs.
Time taken by larger pipe = x-4 hrs
Total time = 5 hrs
x+x-4=5
2x-4=5
2x=9
x=4.5 hrs
Time taken by larger pipe = x-4 = 0.5 hr