It takes Mr. Karthik ‘y’ hours to complete typing a manuscript. After 2 hours,…

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It takes Mr. Karthik ‘y’ hours to complete typing a manuscript. After 2 hours, he was called away. What fractional part of the assignment was left incomplete?

  1. A.

    1/y

  2. B.

    (y-2)/y

  3. C.

    y/2

  4. D.

    y-2

Attempted by 85 students.

Show answer & explanation

Correct answer: B

Solution: 2

Karthik completes the assignment in y hours

So, in 1 hour he completes 1/y of the assignment

So, in 2 hours he will complete 2(1/y) = 2/y of the assignment

Left assignment = 1 – (2/y) = (y-2)/y

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