Math, asked by kewalchettri00, 1 month ago

Ashish and Rohit can do a piece of work in 25 and 75 days respectively. How many days they have to work together to complete two-fifth of the work ?

Answers are : a) 20days, b) 15/2 days, c) 75/4 days and d) 15/4 days.​

Answers

Answered by rupeshpradhan07
0

Answer:

20 days is the correct answer

Take A is Asish and Take B is Rohit

A's one-day work =1/30

B's one-day work = 1/20

A+B ‘s one-day = 1/30+1/20=2+3/60=5/60=1/12

So A and B work together and complete by 12 days

B leaves 5days before complete the work

So they worked together for 7 days

7*1/12=7/12

Total work = 1–7/12=5/12

Remaining work = 5/12

A finishes remaining work,

Full work in 30days

1= 30

5/12= x

x= (5/12)*30=150/12=12.5

So A takes 13 days to complete remaining work.

Total time to complete the work is 7+13= 20days

Step-by-step explanation:

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Answered by jasleenbhullar
0

Answer:

20 days answer

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