Study the given graph carefully to answer the question that follow:
Number of days taken by three carpenters to finish making one piece each of four different items of furniture
If Carpenter X and Carpenter Y were to make a chair together how many days would they take ?
From the graph, the number of days taken by carpenter X to make a chair is 3 days.
From the graph, the number of days taken by carpenter Y to make a chair is 4 days.
Hence, the amount of work done by both of them together in a day is equal to $$\frac{1}{4} + \frac{1}{3} = \frac{7}{12}$$
So, the total number of days it takes for them to make a chair together is $$\frac{1}{\frac{7}{12}} = \frac{12}{7} = 1.71$$ days
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