a and b can together work a painting in 20 minUtes. A alone can colour painting in 25 minutes. in how much time can B alone colour the painting ?
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Answered by
5
Answer:
100 days
Step-by-step explanation:
a,b are completing there work in 20 days
means per day they are completing 1/20 part of the work
in the same way a complete 1/25 part of work per day
then how much work does b can complete
1/20=1/25+1/b
we have to find b
1/20 can be written as 5/100
1/25 can be written as 4/100
5/100=4/109+1/b
(5-4)/100=1/b
1/100=1/b
means b can complet 1/100 part of work per day
then it take 100 days to b to complete the work
Answered by
4
Answer:
100
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