1/20 +1/30 -1/40 30+20/600 -1/40 1/12 -1/40 7/120 then d answe

Pipe A can fill in 20 minutes and Pipe B in 30 mins
and Pipe C can
empty the same in 40 mins.If all of them work
together, find the time
taken to fill the tank

Question Posted / jayashree

5 Answers
28348 Views
GrapeCity, LIC, I also Faced
E-Mail Answers

Answer Posted / jayashree

1/20 +1/30 -1/40

30+20/600 -1/40

1/12 -1/40

7/120

then d answer ll be 120/7 this can be returns as 17 1/7mins

Is This Answer Correct ?

55 Yes

2 No

Post New Answer View All Answers

Please Help Members By Posting Answers For Below Questions

What are special signature schemes ?

2592

How are digital certificates used ?

2491

What is a blind signature scheme ?

2694

How do CAs sign certificates?

2250

What is a group signature ?

2816

What are on-line/off-line signatures ?

2808

What are digital certificates ?

2161

What is a one-time signature scheme ?

2774

What is the difference between the CAs?

2313

What are some other signature schemes ?

2443

What is a digital signature and what is authentication ?

3185

What is digital timestamping ?

2842

What is an undeniable signature scheme ?

2860

What is a digital envelope ?

3066

What is a fail-stop signature scheme ?

2862