rammu and Balu working together can paint a house in 20 days ramu alone can do it in 30 days how many days will it take to complete the same work alone.
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Answer:
3 people
Step-by-step explanation:
2/30 x/20. Inverse proportion formula= x1y1=x2y2
2*30= 20x
60=20x
x=3 people
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No. of days taken by Ramu alone to do the work=30
Work done by Ramu in a day=1/30
No. of days taken by Ramu and Balu together=20
Work done by Ramu and Balu in a day=1/20
Work done by Balu alone in a day=
Work done by them together in a day - Work done by Ramu alone in a day
1/20-1/30----------->3-2/60---------->1/60
Work done by Balu alone in a day=1/60
No. of days taken by Balu alone=60 days.
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