Home » Aptitude » Time and Work » Question
  1. If A, B and C can complete a work in 6 days. If A can work twice faster than B and thrice faster than C, then the number of days C alone can complete the work is :
    1. 33 days
    2. 44 days
    3. 22 days
    4. 11 days
Correct Option: A

Using Rule 3,
Let time taken by A = x days
∴ Time taken by B = 2x days
Time taken by C = 3x days
According to the question,

1
+
1
+
1
=
1
x2x3x6

6 + 3 + 2
=
1
6x6

11
=
1
6x6

⇒ 6x = 6 × 11
⇒ x =
6 × 11
= 11
6

∴ Time taken by C alone = 3x
= 3 × 11 = 33 days



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