Question

Ajayand vijay undertake to do a piece of work for rs. 480. ajay alone can do it in75 days while vijay alone can do it in 40 days. with the help of pradeep, theyfinish the work in 25 days. how much should pradeep get for his work?

Answer 1

50 days the answer i think.

Answer 2

Answer:

Pradeep get Rs.20 for his work

Step-by-step explanation:

Ajay can complete work in days = 75

Ajay can do a part of work in 1 day = $\frac{1}{75}$

Vijay can complete work in days = 40

Vijay can do a part of work in 1 day = $\frac{1}{40}$

They can do together  a part of work in 1 day  $\frac{1}{75}+\frac{1}{40}$

With the help of pradeep, they finish the work in 25 days.

With pradeep 1 day work = $\frac{1}{25}$

So, Pradeep's 1 day work  = $\frac{1}{25}-(\frac{1}{75}+\frac{1}{40})$

Pradeep's 1 day work  = $\frac{1}{600}$

ratio of their 1 day work =  $\frac{1}{75}: \frac{1}{40}:\frac{1}{600}$

                                      = 8:15:1

Sum of ratios = 8+15+1 =24

So, Pradeep's share = $\frac{1}{24} \times 480$

Pradeep's share =Rs.20

Hence  pradeep get Rs.20 for his work