Question

Two men A and B work alone in 8 daus and 20days and respectively. They did work together for 4 days. Find the remaining portion of work to be completed ​

Answer 1

Answer:

Remaining work will be 3/10

Answer 2

Answer:

The remaining portion of the work to be completed =  $\frac{3}{10}$

Step-by-step explanation:

Given,

A can complete the work  in 8 days

B can complete the work in 20 days

Both A and B did the work for  4 days

To find,

The remaining portion of the work to be completed

Solution:

Since A can complete the work in 8 days, the portion of the work A can do in a day = $\frac{1}{8}$

Since B can complete the work in 20 days, the portion of the work B can do in a day = $\frac{1}{20}$

Then, the portion of work A and B together can complete in a day

= $\frac{1}{8}$ + $\frac{1}{20}$

= $\frac{5+2}{40} = \frac{7}{40}$

Since they worked together for 4 days, the portion of the work completed

= $\frac{7}{40} X4$

= $\frac{7}{10}$

Hence, the remaining work to be completed = 1 -  $\frac{7}{10}$ =  $\frac{3}{10}$

Answer :

The remaining portion of the work to be completed =  $\frac{3}{10}$

#SPJ2