Multiple choice

Ram can complete a work in the same time in which Shyam and John together can do it. How many days will Shyam alone take to complete the work if Ram and Shyam together could do it in 10 days and John alone in 50 days?

  1. 24

  2. 25

  3. 20

  4. 22

  5. 26
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let R, S, J be work rates. R = S + J. Given R + S = 1/10 and J = 1/50. Substituting R: (S + J) + S = 1/10 => 2S + 1/50 = 5/50 => 2S = 4/50 => S = 1/25. Shyam takes 25 days.

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