Question

mawia and enga working together can complete a piece of work in 20 days . if mawi alone can complete this work in 30 days ,how much time will enga take to finish it
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Answer 1

Answer:

60 days

Explanation:

Given,

mawia(M) and enga(E) working together can complete a piece of work in 20 days

M+E=1/20 days

if mawia alone can complete this work in 30 days

M=1/30

E=1/20-M

E=1/20-1/30

E=3-2/60

E=1/60 days