Time and Work Practice Test 3 with solutions

2 persons working 2 hours a day for each of 2 days produce 2 article’s.
2 persons working 2 hours a day for each of 1 day produce $\frac{2}{2}$ = 1 article.
2 persons working 1 hour a day for each of 1 day produce $\frac{1}{2}$ article.
1 person working 1 hour a day for each of 1 day produce $\frac{1}{2\times 2}$ = $\frac{1}{4}$ article.
4 persons working 1 hour for 4 days for each of 1 day produce $\frac{1}{4}\times 4$ article.
4 persons working 4 hours for day produce 1 × 4 = 4 articles.
4 persons working 4 hours for 4 days for each of 4 days produce 4 × 4 = 16 articles.