issb mathematics MCQ #680

A in 5 days, B in 20 days, C in 20 days together?

issb mathematics MCQ #680

  1. Question 1

    Q1. A in 5 days, B in 20 days, C in 20 days together?

    • A) 2.5 days
    • B) 3 days
    • C) 3.5 days
    • D) 4 days

    Answer: 2.5 days

    Explanation: Rates sum to 1/5 plus 1/20 plus 1/20 equals 3/10 so 3.33 days.