A can finish a job in days and B in days. Working together, in how many days can they finish it?
Answer and explanation
Correct answer: D. 6
- Step 1: Determine the work completed per day by each individual: A completes of the job per day, and B completes of the job per day.
- Step 2: Add their daily rates to find the joint rate: .
- Step 3: The time required to complete the entire job together is the reciprocal of the combined rate: .
Answer
6.
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