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Pipe and cistern

Two pipes can fill a tank in 15hrs and 12hrs respectively and a third pipe can empty it in 4hrs. If the pipes be opened in order at 8AM 9AM and 11AM.  respectively, the tank will b emptied at??? 

"I NEED EXPLANATION "☺️🙏

9 Comments 941 Views
imperfect gal:) 11 months ago
See previous comments 5 of 9 comments

Ragini mishra 11 months ago

Guddi😊🙇🙇ans plz

- Reply (0)

imperfect gal:) 11 months ago

2:40PM

Is discussion ki winner h Madhuvardhini😀😀☺️👏👏👏👏😀

- Reply (3)

MadhuVardhini 11 months ago

thank you

- Reply

BaSu 11 months ago

Congrats madhuvardhini smile

- Reply

MadhuVardhini 11 months ago

thank you

- Reply

Ragini mishra 11 months ago

Grt👍👍

- Reply (0)

rajdeep banik 11 months ago

guys mera ans 2.20 pm aa raha hain

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rajdeep banik 11 months ago

till 11 am 1st pipe fills 1/5 of the tank and second pipe fills 1/6 of the tank so till11 am 11/30 tank is filled, now if all pipes are opened simultaneously in 1 hr 1/ 10 of the tank gets emptied(1/15+1/12-1/4), so to empty 19/30 remaining portion they would need 19/30*10 hrs= 6 hrs and 20 min.so total time is 8+ 6 hrs and 20 min= 2.20 pm. Guys kindly point out where i made mistake

- Reply (3)

SAKET SOURAV TRIPATHY 11 months ago

11+6hrs 20min hoga na!!

- Reply

rajdeep banik 11 months ago

saket bhai zara dekho toh ki ans sahi hain ya galat

- Reply

SAKET SOURAV TRIPATHY 11 months ago

mera to 5:20 aa raha he..apne jo 6:20 add kia wo 11a.m me hoga na

- Reply

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