Question
The time taken by ‘A’ to build a wall alone is 35%
more than the time taken by him to build it along with ‘B’. ‘B’ will take how much percent more time to build the same wall than the time taken by him to build it along with ‘A’?Solution
Let the work ‘A’ and ‘B’, can do in 1 day be ‘a’ units and ‘b’ units, respectively. Let they takes ‘p’ days to build the wall, together Therefore, Total work = (a + b) × p units …….. (1) According to the question, Time taken by ‘A’ to build the wall alone = 1.35p days Therefore, total work = 1.35p × a units….. (2) From equation (1) and (2), we get 20b/7 = a Therefore, total work to be done = (a + b) × p = 27bp/7 units Time taken by 'B' to build the wall = 27bp/7b = 27p/7 days Therefore, required percentage = (27p/7 – p)/p} × 100 = 285.71% more time
The diagram given below shows the results of a survey on a sample of 500 students with reference to their interest in different types of movies viz. Act...
How many classes are there in the given picture?
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
_ BCD _ _ ABC _ _ E _...
Which two signs should be interchanged to make the below equation mathematically correct?
7 – 3 + 6 × 4 ÷ 2 = 25
In a certain code language " BRIEF" Is written as " SCHOF" , and " CHART " is written as "IDZUS". Which of the following are correct matches as pe...
Find the missing code letter from the following response:
SCD, TEF, UGH, ________, WKL
Two statements are given followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance w...
Four of the following five figures are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group?
Select the Venn diagram that best illustrates the relationship between the following classes.
Dubai, Asia, Africa
Rahul walked 6 km. towards West and turned to his left and walked 4 km. Then he turned to his right and walked 6 km. Finally, he turned to his right aga...
Relevant for Exams:
