Championships 21683

Before the World Water Polo Championships, it was necessary to fill the pool. The first pump would fill in 12 hours, the second in 15 hours, and if all three pumps were started simultaneously, they would fill the pool in 4 hours. How long would the pool be filled with only the third pump?

Correct answer:

c =  10 h

Step-by-step explanation:

a=12 h b=15 h  4 (a1+b1+c1) = 1 4 (12c+15c+1) = c  4 (15 c+12 c+12 15) = 12 15 c  15 c+12 c+12 15=3 15 c  18c=180  c=18180=10=10 h  c=10   Verifying Solution:   s=4/a+4/b+4/c=4/12+4/15+4/10=1



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: