Multiple choice

Raj, Seema, and Tara have individual completion times of 25 days, 18 days, and 30 days for a particular task. While Raj is committed to working every day, Seema works on weekdays from Monday to Friday, and Tara works on weekends i.e. Saturday and Sunday. With this schedule starting from Monday what will be the approximate time required for them to finish the task together?

  1. 11 days

  2. 13 days

  3. 9 days

  4. 15 days
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Weekly work: Raj does 7/25, Seema does 5/18, Tara does 2/30. Weekly total = 7/25 + 5/18 + 2/30 = 126/450 + 125/450 + 30/450 = 281/450. Time = 450/281 approx 1.6 weeks = 11.2 days.

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