Let the total work = 260 units Then, efficiency of ‘A’ = (260/65) = 4 units/hour Work completed by ‘A’ alone in 40 hours = 4 × 40 = 160 units Remaining work = 260 – 160 = 100 units So, efficiency of ‘B’ = 100/25 = 4 units/hour Therefore, combined efficiency of ‘A’ and ‘B’ = 4 + 4 = 8 units/hour So, time taken by ‘A’ and ‘B’ together to complete the work = (260/8) = 32.5 hours
Which of the following is the main characteristic that differentiates random sampling from non-random sampling techniques?
Which of the following forecasting methods is specifically designed to capture both autoregressive and moving average properties, often applied to non-s...
Which of the following Excel functions is most appropriate for dynamically summarizing data from multiple tables by matching a key value?
A retail company is experiencing declining sales despite increasing website traffic. Which of the following steps best aligns with a data analyst's resp...
During the data analysis process, which of the following steps is primarily focused on removing inaccuracies and ensuring the dataset's reliability?
You receive a dataset with missing values in multiple columns. What is the most effective approach to handle these missing values?
Which approach is most effective in leveraging data for fraud detection in financial transactions?
Which of the following best describes the main difference between random and non-random sampling methods?
Which of the following best describes the purpose of data wrangling?
To reduce bias in a sampling process, which of the following strategies is most effective?
