## How long does it take A and B to complete work?

A and B can separately complete a piece of work in 20 days and 30 days respectively. They worked together for some time, then B left the work. If A completed the rest of the work in 10 days, then B worked for: 1). A and B alone can complete a piece of work in 9 days and 18 days respectively.

## How many days can 2 persons complete a certain work?

2 persons, A and B, can complete a certain work in 20 days and 30 days respectively if both of them started to work together. After how many days, should A stop from working so that B can complete the remaining work in 5 days? – Quora

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How many days does a work 5 days more than B?

According to the question, A works 5 days more than B. => Extra work done by A alone = 5/30 part of work. 30 x 20/ (30 + 20) = 600/50 = 12 days. 12 x 25/30 = 10 days. Let A & B work together for D days and let A work for 5 more days. => Extra work done by A alone = 5/30 part of work. 30 x 20/ (30 + 20) = 600/50 = 12 days. 12 x 25/30 = 10 days.

### How long does it take a to do the job?

A and B can do the job in 30 and 20 days individually, so together they will take 30*20/ (30 + 20) = 600/50 = 12 days. The work that A can do in 5 days is 1/6th. So, A left when 5/6th of the work was done or A left after (5/6)*12 = 10 days Total time taken = 10 + 5 = 15 days.

### How long does it take to do a piece of work?

A and B working separately can do a piece of work in 9 and 15 days respectively. If they work for a day alternatively, with A beginning, then the work will be completed in A). 10 days

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How many days do A and B work on alternate days?

Hence with A and B working on alternate days, the entire job gets completed in 24 days. A can complete a work in 16 days and B in 12 days. Starting with A, they work on alternate days. The total work will be completed in how many days?

#### How many units can A and B do in 2 days?

A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a day Since they work on alternate day they will do 7 units in 2 days. This 2 days cycle will continue Now A’s turn. He will do 1). A can do a piece of work in 5 days less than the time taken by B to do it. If both of them together take 2).