Rishikesh and Mukesh can individually c...

Rishikesh and Mukesh can individually complete a piece of work in 18 days and 24 days respectively. On which day will the work be completed, If they work on alternate days starting with Rishikesh ?

11th

20th

21st

18th

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The correct Answer is:

Work done in 1 day +1 day is `(1)/(18)+(1)/(24)`

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