How many days it will take to complete the work. If Ram and Shyam complete the work in 25 and 10 days respectively and they do the work alternately started by Shyam.
A) 1415 days
B) 1412 days
C) 15 days
D) 1512 days
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Answer:
Step-by-step explanation:
Hey how r u happy holi...
Rate*Time = Work
Since the work done is same throughout the question so we can take the work done as 1
Let Rate of Ram be R, Hari be H and Shaym be S
A piece of work can be done by Ram and shyam in 12 days
When Ram and Shyam will work together then their rate will be added. So combined rate will be R+S
(R+S)*12 = 1
R+S = 1/12 ...(1)
By shyam Nad hari in 15 days
Similarly
S+H = 1/15 ...(2)
hari and ram in 20 days
Similarly
H+R = 1/20 ...(3)
(2)-(3)
S+H - (H+R) = 1/15 - 1/20
=> S-R = 1/60 ..(4)
(1) - (4)
R + S - (S - R) = 1/12 - 1/60 = 4/60 = 1/15
2R = 1/15 => R = 1/30
Ram alone can complet the work in how much days ?
R * t = 1
t = 1/R = 1/ (1/30) = 30 days/2 =15days
Hope its helps u bro
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