Question
A cistern is normally filled in 18 hours, but it takes
12 hours longer to fill because of a leak at its bottom. If the cistern is full, how long will it take to empty it?Solution
Let pipe is A and leak is B A A+B 18 30 Let total tank = LCM(18,30) = 90 L 5 : 3 So 1 hr work of leak = 3 - 5 = -2 Therefore, the leak will drain all the water of the tank in 90/2 = 45 hours.
How many letters as per the English Alphabetical series are there between the first letter of the second word from the left end and third letter of the ...
E 7 8 D $ % J 9 4 L M & F 9 @ H F X 9 8
In the above series how many letters are immediately preceded by a symbol and immediately followed by an ...
Each of the five friends among V, W, X, Y and Z has different number of chocolates. The number of persons who have more chocolates than those with X is ...
Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
_ _ K _ M _ N ...
In the given arrangement, how many such numbers are there which are immediately followed by a symbol and immediately preceded by a letter?
What will come in place of question mark (?) in the following series?
3MN, 5LO, 7KP, 9JQ, ?
How many symbols are there which are immediately followed by a letter?
This question is based on the five, three-digit numbers given below:
(Left) 158 438 182 325 230 (Right)
If 5 is added to the first digit o...
- Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
_ _ r s _ p q _ ... Select the incorrect term in the alpha-numeric series:
X, Z, B, D, F, G
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