Fifteen men take 10 days to complete a job working 12 hours a day.How many hours a day should 10 men work to complete the job in 20 days ?

Explanation

To solve the problem step by step, we will use the concept of work done, which is calculated using the formula:

**Work = Number of Men × Number of Days × Number of Hours per Day**

### Step 1: Calculate the Total Work Done
First, we calculate the total work done by 15 men in 10 days, working 12 hours a day.

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