a can do a certain job in 25 days B alone can do it in 20 days a started the work was joined by after 10 days in how many days was the whole work completed
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Answer:
A's Iday work=1/25
B's. ..... 1/20
A+B. ... I/25+1/20=4/100+5 / 100 = 9/100
A's 10 days Work=1/25x10=10/25
= 2/5
Remaining=1-2/5=3/5
3/5 work completed by A&B in
3/5/9/Ioo
3/5x100/9=20/3 = 6 2/3 days
Total A 10 days, A+B 6 2/3 days=
16 2/3 days. Ans'
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