4) A finishes his work in 15 days while B takes 10 days. How many days will the same work be done if they work together? (a) 5 days (b) 6 days (c) 2 days (d) 3 days
Answers
Answered by
3
Answer:
5 days
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Answered by
1
Answer:
in 6 days
Step-by-step explanation:
A does 1/15part in 1 day
B does 1/10 part in 1 day
Therefore,
A+B does (1/15+1/10) parts = (2+3)÷30 parts in 1 day
therefore, 5/30 parts in 1 day
therefore, 1/6 parts in 1 day
Therefore, the whole part will be made in 1÷ 1/6 = 6 days
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