NCERT Miscellaneous Exercise Q18 - Sequences and Series
Question: 150 workers were engaged for a job. Four workers drop out on the second day, four more on the third day, and so on. The job takes eight extra days. Find the number of days in which the work was completed.
Answer: The work was completed in 25 days (it was planned for 17 days).
Full step-by-step NCERT solution with diagrams on Something by Zero.