Question
A can do a work in 20 days, B can do in 30 days and C
can do in 60 days. If A is helped by B and C every third day. The number of days they will take to competed the work is:Solution
ATQ, The efficiency of A is 1/20 The efficiency of B is 1/30 The efficiency of C is 1/60 1st day work by A = 1/20 2nd day work by A = 1/20 3rd day work by A + B + C = 1/20 + 1/30 + 1/60 ⇒ (3 + 2 + 1)/60 = 1/10 Work completed in 3 days ⇒ 1/20 +1/20 + 1/10 = 1/5 Time is taken to complete the work ⇒ 3 × 5 = (1/5) × 5 ⇒ 15 days = 1 ∴ In 15 days the work will be completed.
Select the odd letters from the given alternatives?
Find the odd number from the given alternatives.
Three of the four words are alike in a certain way and one is different. Pick the odd one out.
Four words have been given, out of which three are alike in some manner and one is different. Select the odd word.
Select the option in which the letter clusters are related in the same way as the given set. Four letter clusters have been given, out of which three ar...
Three of the following four sequences of letters are alike in a certain way and one is different. Pick the odd one out.
Four letter clusters have been given out of which three are alike in some manner and one is different. Select the letter cluster that is different.
Select the odd letters from the given alternatives?
In the following question, four number pairs are given. In each pair the number on left side of (-) is related to the number of the right side of (-) wi...
Select the option in which the numbers do not share the same relationship as that shared by the given pair of numbers.
34 : 408
Relevant for Exams:
