Algebra 1 Question. Please Help?

Question

The Larger of two pipes can fill a tank twice as fast as the smaller. Together, the two pipes require 20 minutes to fill the tank. Find the number of minutes required for the larger pipe to fill the tank.

Answer 1

its 10 mins b/c together they fill it in 20 mins and 20/2 =10 and 5*2=10

Answer 2

i think its 8 mins or 10 mins

Answer 3

Let x represent pipe...

2x + x = 20 minutes

therefore 3x = 20

x = 6.66  larger pipe takes 6 minutes and 40 seconds

smaller pipe takes 13 minutes and 20 seconds

Answer 4

Larger Tank: 6 minutes and 40 seconds    

Answer 5

Rate of larger pipe = 1 / x

Rate of smaller pipe = 1 / 2x

Rate together = 1 / 20

Rate of larger pipe + rate of smaller pipe = Rate together

(1 / x) + (1 / 2x) = (1 / 20)

(2 / 2x) + (1 / 2x) = (1 / 20)

(3 / 2x) = (1 / 20)

3 * 20 = 2x

60 = 2x

x = 30

ANSWER: The larger pipe takes 30 minutes to fill the tank.

Answer 6

I would go with Lucy's answer definitely!