Two Pipes A And B Can Fill A Tank In 4 And 5 Hours Respectively. If T

1.	Two Pipes A And B Can Fill A Tank In 4 And 5 Hours Respectively. If They Are Turned Up Alternately For One Hour Each, The Time Taken To Fill The Tank Is?
Answer» 1/4 + 1/5 = 9/20 20/9 = 2 2/9 9/20 * 2 = 9/10 ---- 4 hours WR = 1 - 9/10 = 1/10 1 H ---- 1/4 ? ----- 1/10 2/5 * 60 = 24 = 4 hrs 24 min. 1/4 + 1/5 = 9/20 20/9 = 2 2/9 9/20 * 2 = 9/10 ---- 4 hours WR = 1 - 9/10 = 1/10 1 h ---- 1/4 ? ----- 1/10 2/5 * 60 = 24 = 4 hrs 24 min.

Two Pipes A And B Can Fill A Tank In 4 And 5 Hours Respectively. If They Are Turned Up Alternately For One Hour Each, The Time Taken To Fill The Tank Is?

Answer»

1/4 + 1/5 = 9/20

20/9 = 2 2/9

9/20 * 2 = 9/10 ---- 4 hours

WR = 1 - 9/10 = 1/10

1 H ---- 1/4

? ----- 1/10

2/5 * 60 = 24 = 4 hrs 24 min.

1/4 + 1/5 = 9/20

20/9 = 2 2/9

9/20 * 2 = 9/10 ---- 4 hours

WR = 1 - 9/10 = 1/10

1 h ---- 1/4

? ----- 1/10

2/5 * 60 = 24 = 4 hrs 24 min.