Pamela and rosanna can finish a piece of work in 3 days. Pamela working alone can finish it in 4 days. How many days would it take rosanna to do it alone?
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Answer:12 days
- Step-by-step explanation: Pamela and rosanna take 3 days. And pamela takes 4 days alone. To find the total work you can take L.C.M of 3 and 4 which is 12. Now we can say
- pamela and rosanna's 1 day work is 4 unit and Pamela's 1 day work is 3 units
- pamela + rossana= 4 and pamela=3 , clearly we say that rossana's efficiency is 1 unit
- To find the number of days formula is DAYS=TOTALWORK/EFFICIENCY
- DAYS= 12/1 =12 IS YOUR ANSWER AND PAMELA TAKES 12/3 = 4 DAYS ALONE
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