Time and Work Practice Test 5 with solutions

5 persons working 5 hours a day can complete a work in 11 days.
5 persons working 1 hour a day can complete the work in (11 × 5) days.
5 persons working $5\frac{1}{2}$ hours a day can complete the work in $\frac{11\times 5\times 2}{11}$ days.
10 persons working $5\frac{1}{2}$ hours a day can complete the work in $\left(\frac{11\times 5\times 2\times 5}{11\times 10}\right)$ days = 5 days.