Time and Work Practice Test 3 with solutions

Work done by Mridul in one day = $\frac{2}{25}$
Work done by Mridul in 5 days = 5 × $\frac{2}{25}$ = $\frac{2}{5}$
Work left = 1 - $\frac{2}{5}$ = $\frac{3}{5}$
Work done by Piyush in one day = $\frac{1}{15}$
Work done by Piyush in 5 days = 5 × $\frac{1}{15}$ = $\frac{1}{3}$
Work left = $\frac{3}{5}-\frac{1}{3}$ = $\frac{9-5}{15}$ = $\frac{4}{15}$
Number of days taken by Sara to complete $\frac{4}{15}$ th part of the work = 3 days
Number of days taken by Sara to complete the work done
= $3\times \frac{15}{4}$ = $\frac{45}{4}$ = $11\frac{1}{4}$ days