Question
'A' can do some work alone in 16 days. 'A'and 'B' work
together for 8 days after which'A' leaves and 'B' finishes the remaining work alone in 12 days. How much time does 'B' need to finish the work alone?Solution
ATQ, Let the efficiency of 'A' be 'a' units/day. So, total work = 16 × a = '16a' units So, work done by 'A' in 8 days = a × 8 = '8a'units So, work done by 'B' = 16a - 8a = '8a' units So, efficiency of 'B' = 8a ÷ (12 + 8) = '0.4a'units/day So, required time = 16a ÷ 0.4a = 40 days
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance...
In a certain code language, ‘GOOD’ is written as ‘75’ and ‘FINE’ is written as ‘82’. How will ‘BEST’ be written in that language?
 In this question, a statement is followed by two inferences numbered I and II. Based on the statement, you have to decide which of the inferences can ...
X # Y means 'X is the brother of Y'
X @ Y means 'X is the daughter of Y'
X & Y means 'X is the husband of Y'
X % Y means 'X is the ...
Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
AURT, BWSV, CYTX, ?
Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the lettercluster that is different.
...Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is relat...
In a row of boys, if Akhil who is 13th from the left, and Firoz who is 6th from the right end interchange their positions, Akhil becomes 23rd from the l...
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(NOTE : Operations should be perfo...
Relevant for Exams:
