Note 1

Take Note:

Take a note while surfing.

Note With Ink

Give your Note a Colorful Tag.

Easy to Access

Stay on same information and in Sync wherever you are.

Note 2

Take Note:

Organize your information,It may take Shape.

Think With Ink

Differ your Content by Color.

Easy to Access

Easy to pull up your content from anywhere anytime.

Note 3

Take Note:

Don't Let information to miss,Because it take shape

Note With Ink

Simple an Easy Way to take a note.

Easy to Access

Get the same in next visit.

Please wait...

Arithmetic Aptitude :: Pipes & Cistern

10. Two pipes A and B can fill a cistern in 20 and 30 minutes respectively, and a third pipe C can empty it in 40 minutes. How long will it take to fill the cistern if all the three are opened at the same time?

Answer: Option C

Explanation :

Cistern part filled by pipe A in 1 min = 1/20
and by pipe B in 1 min = 1/30
Pipe C empty cistern in 1 min = 1/40 part.
When all pipes are open Cistern part will be filed = (1/20+1/30-1/40) = 7/120
=> Time required to fill the cistern = 120/7 = 17 1/7 min.

Asked In :: Global Edge

Post Your Answer Here:     

No Discussion on this question yet!