Question

Anu can complete a work in 10 days. Manu is 25% more efficient than anu and sonu is 60% more efficient than manu. Working together, how long would they take to finish the job?2 6/17 days 5 6/7 days 3 5/8 days 45/8 days

Answer 1

Answer:

hope u find this answer helpful☺

Answer 2

First option is correct.

Step-by-step explanation:

Since we have given that

Number of days in which Anu can complete her work = 10 days

Since Manu is 25% more efficient than Anu.

So, Number of days in which Manu can complete her work would be

$\dfrac{100}{100+25}\times 10\\\\=\dfrac{100}{125}\times 10\\\\=\dfrac{4}{5}\times 10\\\\=4\times 2\\\\=8$

Since Sonu is 60% efficient than Manu.

So, Number of days in which Sonu can complete his work would be

$\dfrac{100}{100+60}\times 8\\\\=\dfrac{100}{160}\times 8\\\\=5$

So, working together , it will take to finish the job would be

$\dfrac{1}{10}+\dfrac{1}{8}+\dfrac{1}{5}\\\\=\dfrac{4+5+8}{40}\\\\=\dfrac{17}{40}$

Hence, it will take $\dfrac{40}{17}=2\dfrac{6}{17}$ days to finish the job.

Therefore, First option is correct.

# learn more:

Anu can do 1/5of a work in 5 days and

Sonu can do 2/3 of the work in 8 days.In how

many days can both Anu and sonu together the

work

​https://brainly.in/question/13151886