Time and Work Practice Test 3 with solutions

Remaining work = 1 - $\frac{3}{7}$ = $\frac{4}{7}$
In 14 days, $\frac{3}{7}$ th part of the work is done by 21 persons.
In 14 days, $\frac{4}{7}$ th part of the work is done by
21 × $\frac{7}{3}\times \frac{4}{7}$ = 28 persons.
In 8 days, the remaining part of the work is done by 28 × $\frac{14}{8}$ = 49 persons.