arushi and divesh are making a painting. Arushi can complete the painting in 30 minutes. Both arushi and divesh can complete the painting together in 20 minutes. they work together for 10 minutes and they have a quarrel. at this point arushi goes away and in how many minutes divesh can finish the painting?
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Answer:
30 Minutes
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Step-by-step explanation:
A - Arushi D - Divesh , P - Painting
30 A = P
20A + 20D = P
10A + 10D = 1/2(20A+20D) = P/2
so half painting is completed
Divesh to complete = P-P/2 = P/2
20A + 20D = 30A
20D = 10A
A = 2D
30A = P
30 (2D) = P
60 D = P
60D/2 = P/2
30 D = P/2
so Divesh will take 30 minutes more to finsh painting
amitnrw:
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