Start learning 50% faster. Sign in now
Work done by Tanu in One day = (1/A) units Work done by Tanu and Manu together in one day = [1/(A - 6) ] units Work done by Manu in one day = (1/72) units ATQ, (1/A) + (1/72) = [1/(A - 6) ] Or, (1/72) = {1/(A - 6) } - (1/A) Or, A X (A - 6) = 72 X 6 Or, A2 - 6A = 432 Or, A2 - 6A = 432 Or, A2 - 6A - 432 = 0 Or, A2 - 24A + 18A - 432 = 0 Or, A(A - 24) + 18(A - 24) = 0 Or, (A - 24) (A + 18) = 0 So, 'A' = 24 or -18 But since time taken cannot be negative, so 'A' = 24 So, time taken by Tanu to complete the work = 'A' days = 24 days Therefore, required time by Tanu with increased efficiency = 24 x (3/4) = 18 days
Which of the following is an example of non-random sampling?
Which of the following visualizations is most effective for detecting outliers in a dataset ?
When identifying business problems, what is the first step a data analyst should take to ensure clarity and effectiveness in solving the problem?
A study estimates the average weight of a population with a 95% confidence interval of (65 kg, 75 kg). What does this mean?
Which of the following is the key difference between probability-based and non-probability-based sampling techniques?
Which traversal method is most suitable for finding connected components in an undirected graph?
What is the purpose of calculating an appropriate sample size in data analysis?
Which measure of central tendency is most appropriate when data has extreme outliers?
What is the primary advantage of using CIDR (Classless Inter-Domain Routing) in IP addressing?
You have a dataset with inconsistent date formats (e.g., 'DD/MM/YYYY', 'MM-DD-YYYY', 'YYYY-MM-DD'). What is the first step you should take to standardiz...