16) There are two water tanks A and B, A is much smaller
than B. While water fills at the rate of one litre every
hour in A, it gets filled up like 10, 20, 40, 80, 160... in
tank B. (At the end of first hour, B has 10 litres , second
hour it has 20, and so on). If tank B is 1/32 filled after
21 hours, what is the total duration required to fill it
completely?
a) 26 hrs b) 25 hrs c) 5 hrs d) 27 hrs
- 6 Answers
- 40871 Views
- CTS, iSoft, TCS, Wipro, Yahoo, I also Faced
- E-Mail Answers
Answer Posted / sumit kumar
10+20+40+80+160....
10(1+2+4+8+16..............)
this is a gp
first term=a
ratio=2
t21=1*2^20
given*******
1/32 of x=2^20
x=2^25
therefore in gp
Tn=ar^n-1
n-1=25
n=26
=26
| Is This Answer Correct ? | 141 Yes | 17 No |
Post New Answer View All Answers
cpahlet : shoulder :: ring : ?
Why RSD of area limit is 15?
1. Profit and loss problem.. Two mercants sold a good of worth Rs 1000 from which one merchant A got profit from selling prices and merchant B got profit form cost price and profit for both is 25% what is difference amount.? 2.5lts solution bottles in which 4 lts of solution is filled in which 15 % of salt is mixed,1.5 lits solution is fell out and it is filled with water how much of salt content is present..? 3.Square of 21 cms and bull was tied at corner with rope of 7 cms how much area it can graze... 4.A and B can do a work 15 and 20 days respectively form which A as done half of the work and then b joind then it done 1/20th work how much many days in which a complted work which left by B.
Age of Grandfather is the ages of 4 grandchildren where their ages are in consecutive.Find the age of Grandfather.
If 13 = 13w/(1-w) ,then (2w)2 = ?
A speedboat whose speed is 15 kmph in still water goes 30 kmph downstream and comes back in a total of 4hrs 30min. What is the speed of the stream in kmph?
a circular track has 100yards. The race of Rabbit and TOuttoise. they started at same point. and move in circular path. in opposite direction.first tortoise run for 1/8 th path, then only rabbit starts,rabbit moved slowly till tortoise meet him, Rabbit had covered 1/6 th distance speed( over earlier speed) to win
One rectangular plate with lenght 8 inches, breadth 11inches and 2 inches thickness is there. What is the length of the circular rod with diameter 8 inches and equal to volume of rectangular plate?
Find the nth number in the series is 1, -3, 5, -7.___
A person was fined for exceeding the speed limit by 10 mph. Another person was also fined for exceeding the same speed limit by twice the same. If the second person was travelling at a speed of 45 mph. find the speed limit .
Find the correct meaning of the following phrase: To bite the dust
Fifty minutes ago if it was four times as many minutes past three o'clock, how many minutes is it to six o'clock?
Find the reminder when 333666777888999 divided by 3 or 9 or 11 ?
Find the correct meaning of the following phrase: To be in the air
Number of digits with a 2 in them between 100 and 400?
