A and B alone can complete work in 9 days and 18 days respectively. Th

1.	A and B alone can complete work in 9 days and 18 days respectively. They worked together; however 3 days before the completion of the work A left. In how many days was the work completed?1. 52. 63. 74. 8
Answer» Correct Answer - Option 4 : 8 Given: A and B alone can complete work in 9 days and 18 days respectively. Calculations: Let the work be completed in x days. According to the question, A worked for (x –3) days, while B worked for x days. so (x - 3)/9 + x/18 = 1 ⇒ (2x - 6 + x)/18 = 1 ⇒ 3x - 6 = 18 ⇒ 3x = 24 ⇒ x = 8 ∴ the correct answer is 8 days.

A and B alone can complete work in 9 days and 18 days respectively. They worked together; however 3 days before the completion of the work A left. In how many days was the work completed?1. 52. 63. 74. 8

Answer» Correct Answer - Option 4 : 8

Given:

A and B alone can complete work in 9 days and 18 days respectively.

Calculations:

Let the work be completed in x days.

According to the question,

A worked for (x –3) days, while B worked for x days.

so (x - 3)/9 + x/18 = 1

⇒ (2x - 6 + x)/18 = 1

⇒ 3x - 6 = 18

⇒ 3x = 24

⇒ x = 8

∴ the correct answer is 8 days.

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A and B alone can complete work in 9 days and 18 days respectively. They worked together; however 3 days before the completion of the work A left. In how many days was the work completed?1. 52. 63. 74. 8

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